Adcom gfa 5400 vs 555 Jul 4, 2019 #1 Hello Adcom GFA-545 and GFA-5400how do they compare? Reliability, quality and above all, which one sounds better? Thanks Lucky Luke . I've had a GFA-555 mkII (200 wpc) driving Infinity RS-IIIb's for years, and think it does an excellent job on classical music with For use in professional installations, the GFA-555ms may be mounted in a standard 19-inch rack using the optional RM-7 rack-mount adaptors available through ADCOM dealers. Both solid, reliable amps, but sonically a little thin on the bottom and a little strident on the top end. Download Table of Contents Contents. You have made a wise choice that will reward you for years to come with exceptionally accurate and The Adcom GFA-5400 Amplifier provides an easy start and good performance. 95. Stefan Have you tried the Adcom web site for info? The 555II is a newer version of the 555. Home Forums > Discussions > Audio Hardware > Adcom 5400 vs Adcom GFA 555 question. avguytx Lunatic Member. 7 KB · Views: 479 what is the big difference I will get if I add the Adcom GFA 545 II power Gfa-555Ms Is Rated At 200 W Into 4 Ohms, Takes Both Unbalanced And Balanced Inputs And Provides High Performance, Ultra Low Distortion Output Power All From A Neat Package. Once again, Adcom is ready for a fresh start, and J&B Distribution has announced that the firm will be introducing “updated and modernized versions” of its classic products, including the legendary GFA-555 stereo The GFA-555 remained in the Adcom line until recently, when the company upgraded it to the GFA-555II, The Adcom GFA-555II measures 17 inches wide, 11-1/2 inches deep, and 7-3/8 inches high. $349. Mine is the GFA 5400 mk II 110v. Register to hide this ad G. #HomeAudio #HighFidelity #VintageAudio Since my NHT speakers are 6 ohm, the Adcom would be pushing more power than 200 watts. I'm researching buying a used Adcom GFA-555 II amp to drive my new (to me) Magnepan MGIIb's. “Adcom GFA-555ms is the latest version of the legendary Nelson Pass designed amp priced at $1,399 today. I am fortunate enough to have a pair of Adcom GFA 565 mono blocks and a pair 555's meticulously restored by fellow AK'er @Mayank. GFA-545. (I also have a 555-II) All seem like nice amps. Version 2 There are 2 versions of the GFA-5400 amplifier. H. D. To sum up, I feel the GFA-555 Mk. Reviewed Feb 26th, 2025 by . healeyg. Pre-Owned · ADCOM. Hi I'm definitely a newbie, and already know my initial choices in starting my first adult sound system will make experienced folks around here cringebut I'm wondering if I might still garnish a bit of insight to help reduce additional "bad" choices or steepen the learning curve just a bit. GFA-555. Standby for math calculation. I currently use a GFA-555 with a pair of JBL 4408A's and it's loud and clear. Can someone with first-hand experience with Is there any advantage to buying the Adcom GFA-555 II vs. Adcom GFA 5500 Or I have used an Adcom GFA-545 and GFA-555 and both are great amplifiers. 11 watching Congratulations on your decision to purchase the GFA-555se power amplifier. Not this 1986 preamp after I replaced every electrolytic capacitor with some bypassed with polypropylene GFA-5400. It’s a factory fan installed model. Discussion in 'Audio Hardware' started by mindblanking, Apr 8, 2013. 1 system uses older Adcom amps. Doesn't matter to me if the 555 can simply get louder without distorting but have been told that higher watt amps Adcom gfa 555 or 5400 Hi, new here and new to the stereo hi-fi world. The ADCOM GFA-555 is a stereo power amplifier rated at 200-watts-per-channel into 8 ohms and capable of greater than 20-amps output into low impedance loads. II to be significantly more neutral as regards midrange and treble tonal quality than the Mk. " - Fredo Sony XBR65A1E-Marantz AV8802a-Oppo BDP-203-Parasound Halo A21 & A31-ZoneMaster 1250 Thanks and good listening Adcom" Page 1 of the GFA-5400 service manual states: "Version 1 vs. to sniff around on original Adcom gear & am wondering if we can first compare specifically the 555se vs. The specifications should adequately describe all the pertinent information, including the increased power output into 8 and 4 ohms over the GFA 545II. I was looking to upgrade and was looking at the old Adcom GFA 555 MKII. POWER SUPPLY Completely Separate Secondary Main Power Systems. Need Adcom GFA-565se info; Adcom GFP 555II Preamp Bass Lacking; Ayon Audio Auris II Tube The older Adcom amps with 3 digit model numbers (535, 545, 555 etc. $69. I’ve had it about 25 years and I bought is used. The famed GFA-555 amplifier drove a lot of high-end speakers, and as proof of their longevity, one of these amplifiers has been in continuous service at my father's house for over twenty years. Of the amps I preferred from Adcom, the GFA 5800 would be my 1st choice. I've also been on the hunt for a nice deal on a used GFA-5500 GFA-5002 and/or GFA-6002 as well. The ADCOM GFA-545 II is a high-voltage amplifier and bias source for Stax' electrostatic headphones. Theater room: Panasonic 65S60 plasma television; Yamaha RX-A2020 (preamp section); Adcom GFA-5503 and GFA-5400 amplifiers; Polk LSi25, LSiC, and LSiF/X loudspeaker system; Velodyne FSR-18 servo-subwoofer. Really the 535 has enough power for the studio 40s for the room the system is located in. Also I know many more that owned them as well. I want to rework the JBL 4408A's because I think they are a little tinny on the top end, but from what I've read from Jim is that it's not the tweeters but crossover components. I bought it back in 1991 from Harvey Electronics in Manhattan. DESCRIPTION ·· 200 Watts continuous average power into 8 ohms at any frequency between 20Hz and 20kHz with both channels driven at less than 0. Senior HTF Member. Zen. Conclusion: The Adcom GFP-555 is a sensible - but perhaps a touch boring - option for any entry-level system. Reviewed Mar 15th, 2023 by . " From my talks with designers and other audiophiles, it is clear that the state of the art in power amplifiers is about to change. I also have 1x GTP-450 1x GTP-500 (Mk1) and 1x GTP-502 (all w/remotes),and still hunting for a GFP-710 and/or a GFP-715. I was wondering if I should buy gfa 555 or 555II. Much the same as the GFA-5400 is the cousin to the GFA-545 & the GFA-5200 is the cousin to the GFA-535. 1st post to this site but been browing for awhile. 18% THD. I heard the series II has a potential problem of leaking caps damaging the circuit board. I wish I could remember the link where Nelson Pass I auditioned the GTP-450/GFA-5400 combo against the GFP-750/GFA-5802 at the local audio salon and I was surprised how little the 5400 gives up to its top-of-the-line sibling. it ADCOM GFA 5400 Como Ficho €350 Feb 16, 2022 SpringAir The GFA-555 on the other hand, is more minimalistic in design, and easier to troubleshoot. But be careful matching a pre to these. * * * Attachments. Sep 3, 2021 #1 I sold these amps at retail back in the latter part of the 80's at the local shop I worked at. I remember when they first came out and I have owned 3 myself. DPM, May 16 The ADCOM GFA-555 II is among the world's greatest audio power amplifiers of all time. Nov 11, 2023. Dark Mode; Light Mode; Menu Log in They didn't sound any better than my $100 used Marantz SR4021 and miniDSP HD just more powerful. I saw the Audio Source amps, and the AMC 2100, the lower spec'd Adcoms(5200 and 5300) and some pro audio gear and considered maybe the NAD C350, or to stretch to The ATI1502 or the Adcom GFA-555 power amplifier Specifications Sidebar: Specifications Description: Output Power: 200W into 8 ohms (23dBW); 325W into 4 ohms (22. Any of you heard the difference between these 2 models ? Audiogon reasoning in detail, of which I retained almost zero, but the bottom line was the 555II was not worth modifying and the 5400 was. 555se I like a warm/ neutral, not bright sound signature at it's most basic That the Adcom GFA-555 should have been successful was no surprise to anyone working in audio electronics back in the ‘80s, because the then-owner of Adcom, Alec Chenin, who had taken over the reins when his The Adcom GFA-5500 is mostly the MOSFET cousin of the older bipolar GFA-555 (both 200wpc). It combines the warmth and detail of tubes with the tight fast bass of transistors. Specifications. ) IMO. I also listen to a lot of classical music. GFA-5400 amplifier pdf manual download. ) What are the most common issues with the GFA-5×5? Generally speaking, the Adcom GFA-535, 545 and 555, both MKI and MKII versions, are extremely reliable amplifiers. Showing 1-10 of 72 [May 06, 2021] pondskater. I got to listen to a Adcom 5400 not to long ago that was for sale buy a local. ) are much better than the 4 digit newer models (5400 5800 etc. I’ve played the heck out of it. The circuit topology and design concepts are virtually identical. Free shipping. The Adcom GFA-5400 is a wonderful sounding solid state amp. Considering that you can get a used GFA-555 My GFA 555 is 18 years old. 95 shipping Adcom GFA-555 120V 50/60Hz 1000w Max Vintage High Current Power Amplifier. The amplifier employs a discrete Class-A voltage-gain stage (front end) which The Adcom GFA-555 power amplifier is somewhat unusual in being an affordably priced product that has also received wide acceptance from the “high-end” section of the audio fraternity. The primary difference between these amplifiers is power output. 555se Table of Contents Let’s explore how each model has contributed to the Adcom story, making them a top choice for My experience with the 5400 is that it was a generally lower end "mid-fi" piece, and in direct comparisons (even with my 1982 NAD equipment) it sounded somewhat thin and lacking in dynamics. They are located inside the unit just before the speaker outputs. Also a lot of Adcom gear is getting pretty old and I'm not interested in repairs. The Adcom Gfa-555 happens to be one of the smoothest and most detailed amps I've heard and that I own 2. the older Adcom GFA-555 model? I'd like to hear any opinions that anyone may have on the difference between the I'm really happy with my old Adcom GFA 545 Amp (100W) & 565 Pre-Amp. That's 25 years ago. the older Adcom GFA-555 model? I'd like to hear any opinions that anyone may have on the difference between the two. Lucky Luke New Member. Adcom is making a new version of the GFA-555 II, the GFA-555 se. Next 10. The GFA-555 was designed by the legendary Nelson Pass (interview, chat room), whose amplifiers today sell new for five figure price tags. 00. I don't have any I used to own an Adcom GFA 555 II with a white faceplate. Becuse it's a little newer, the 7500 may have benefited from some technology upgrades that the 555 did get. ADCOM GFA-555 2-Channel Power Amplifier (200wpc) item 6 ADCOM GFA-555 2-Channel Power Amplifier (200wpc) $369. I use it to drive my vintage Acoustic Research loudspeakers which are difficult to drive, but the Adcom powers them well, and never distorts. Rack-mount adaptors are optional. However, with a powered subwoofer it may do just fine for HT. The modifications improved the sound considerably, and page 6 parts exclusive to version one of the gfa-5400 (version without standby power supply and lm 555 protection circuitry) schematic adcom part number description location d605,d606 16000082 diode 8. i have some basic questions regarding the 555ii adcom amps. These amps were often compared favorably to gear costing much more and were considered by many to be "budget audiophile amps". The GFA-555 has a little difference in sound than the newer Adcom amps like the updated model the GFA-5500. It is the Version 1 made in Japan. The GFA-555 II was designed from the ground up, except for the heat sinks and chassis, by Walt Morrey. It did sound good but wasn't going to be an improvement over my Marantz so I passed. Forums. It beats the pants off amps three times its price. OTOH, personally I get one of the newer class D amps -- lighter, cooling-running, and I am planning to buy an used adcom gfa 555. GFA-5400. Next Last. But not fully. Use Hifi Shark to monitor pricing and global availability Adcom gfa-555 ii + adcom gfp-565 Bazaraki €2,000 Feb 21, 2025 Finn ADCOM GFA 5800 Finn NOK 5,800 Feb 8, 2025 Consonance. . Thread starter avguytx; Start date Sep 3, 2021; 1; 2; Next. Joined Jul 2, 1999 Messages 2,571. The GFA-565/585 is extremely reliable once properly repaired. GFA5500 Thread starter Vintage2023; Start date Nov 11, 2023; V. The GFA-5503 has three channels that meet the same specs as the GFA-5500's two channels. The Adcom GFA-555se may lack a few of the circuit niceties that are now part and parcel on modern amplifier designs – such as a standby circuit, for one – but it punches so far above its weight when it comes to must-haves such as high power, low noise, low distortion, extraordinary extended frequency response and, of course, superb sound, that it deserves to Apart from the differences in rated power, which would be 125-->200-->250 wpc at 8 ohms for adcom GFA 5400 --> 5500 --> 5800 models, is anyone aware of Home. . 2v zener r615,r616 I have an older GFA-555 and a slightly newer GFA 7500. Advanced power amplifier (22 pages) Related Products for Adcom GFA-5400. I, while preserving its virtues: excellent imaging Adcom still makes makes an updated version of the GFA-555II called the GFA-555ms which, at US$1400, is probably quite a bargain. If the GFA-555ms is to be mounted on a rack, along with other components which are interconnected to the GFA-555ms, the amplifier's chassis must be insulated from the Adcom GFA-5500 Amplifiers . If you want more of a class A amp, I would probably sell the GFA5xxx to I have a Adcom GFA 555 series ll power amp. Lots of troubleshooting procedures, tech tips, sc I am no exception and my primary 2-channel as well as my 5. It also features 100 dB signal-to-noise ratio. My 4B SST is 3 years old so it has a long way to go. The pair is nearly perfect, the 4 ohm speakers RMS wattage rated at 400. Enough time for a digital music revolution (maybe peaking now). There was a time when I thought Adcom was lousy sounding equipment from what I've owned in the past. The 555 has a little more of that "electronic amplifier" sound. tjrinaldi I am using this amplifier to drive my Cerwin Vega RE-38 monsters. Together that gives you five channels of some serious matched power for all your speakers. The highs sound a little bit more forward and harsh, vs the 535L sounds more smooth or laid back. There might be no one audiophile amplifier that passes the test of time better than the ADCOM GFA-555 now in its “ms” version What Makes the Adcom GFA-555 Power Amplifier So Special? If you want a Nelson Pass Currently own 1x GFA-535 1x GFA-545 1x GFA-555 (all Mk1) as well as 1x GFA-5200 1x GFA-5300 1x GFA-5400 (all MOSFET). No audible difference to me but the Bryston has much better build quality. It is still working and looking like new. ” I recently got myself a used Adcom GFA 5400. Adcom amplifiers are better known in the US, they rarely show in Europe and mostly are 110v versions. Reviews. Eventually, I replaced it with a Proceed AMP 2 (which I still own). However, the main weak point in the Adcom are the Toshiba transistors in the output stage. At 200 watts per channel, it offers exceptional value and superior performance at a reasonable price. 2V ZENER R615,R616 27004300 RESISTOR 15K Adcom GFA-5400, Cambridge 851n DAC/streamer, Rega Planar 2/AT120(Ortofon X3MC is out for repair) and PSB Stratus Gold speakers, all cables are AudioQuest: Gibraltar/Viper/Wildcat. 1 of 2 Go to page. Thread Status: Not open for further replies. This, I feel, is due in part to the 5400's rated 500 damping The Brystons are nice. Picture 17. The GFA-5500 seems to be a little brighter like, the highs and Adcom GFA-555 vs 555 II vs. For example the Adcom GFA-555 is straight out Mr. GFA-5503. The 555 and the Nak PA-7 both have the 200 watts of the Rotel, giving me the headroom I like, and that additional something that Pass adds to things. Enough time for the Rolling For many years I had an Adcom GFA-5802 which is a Nelson Pass design without the Nelson Pass price on the used market you should be able to get one for about $1,000. We have worked long and hard to ensure that the GFA-555se improves upon it’s original eminent version in key areas, delivering even better performance. I'm pretty sure that the original 555 have fuses on the outputs. 99. ) He In comparison with the 555, how different are they going to sound? Will they give me the sound I seem to favor? Are they as tough and relatable as the other Adcoms and I've done some searches across this forum and others comparing these 2 amps, and have read opinions, many contradictory. It is so clearly superior to past amplifiers in the low- to mid-priced Adcom's GFP 555 II pre-amp and GFA 545 II power amp cost £499 each, for a combined price just £2 below the four-figure mark. 5500 vs. Pre-Owned · ADCOM (2) $503. Cost for the two would be somewhere around $2,200 if you could find a good deal, maybe a bit I am reluctant to call any given transistor power amplifier a "best buy" or "breakthrough. Amplifier Adcom GFA-555 PRO Owner's Manual (10 pages) Amplifier Adcom GFA-585se User Manual. I used to keep several on hand just in case if you know what I mean. After that, Adcom has been tacking on little tweaks here and there throughout their redesigns. By use of updated components in the classic ADCOM GFA-555 design, we have reestablished our heritage of high performance and audiophile quality at the greatest possible value. The GFA 5400 uses MOSFET but if designed to amplify the signal without coloring or distorting it, there should not be audible sonic difference. I did alot of research and ended up with not much in my price range. Strength: hello diy'ers. Adcom GFA-555se vs. So it's kind of a pass design. I guess Adcom is the way to go then! Is there any advantages (besides the bypass caps) that the GFA-555 II has over the GFA-555. New posts Search forums Subscribe. Hi Luigi. I had a GFA-5400 and GFP-565 II back in the mid 90s to the mid 00s. Go. Vintage2023 Member. The primary difference between the original version 1 and the updated version The amp in question, the GFA-5400, was purchased used on Audiogon for $390 shipping included. There are 2 versions of the GFA-5400 amplifier. "Every time I put the line in the water I said a Hail Mary and every time I said a Hail Mary I caught a fish. The original ADCOM GFA-555 stereo power amplifier hit the market in 1985. New Listing Adcom GFA-5400 High Current Stereo Amplifier-125 RMS X 2 Japan. Quality of construction is very high standard with a simetrical layout of both channels, similar As for sound, I'd say not a huge difference between the 555 and 555 II. The 555 Pro is probably a little heavier duty. 555 pro Thread Apr 6, 2002 #2 of 5 Arthur S. (If you need more power, go with the 5800. The amplifier combines basically conventional circuit design with a number of unusual operating details that set it apart from other high-power amplifiers. Just a guess. Then there is the compromise of the GFA-545, which is up in two places for $200. From Adcom: "GFA-5500 Note: Many of the design features in the GFA-5500 are virtually identical to the GFA-5800 power amplifier. chencho12327 how do you think the adcom gfa-545II would power a pair of ar tsw910s have them hooked to a mint sansui 5000x sounds great but these ars AVR-Onkyo TX-NR808 Front amp-Adcom GFA 555>Polk Audio LSi9's(Vr3 Castle Mods) Center amp-Adcom GFA 5400>Polk Audio LSi9 bi-wired(Vr3 Castle Mod) Surrounds-Polk Audio F/X500's<Onkyo TX-NR808 Sub-Velodyne SPL-1000R I need a good powerful amp of signifacant quality, one versatile enough to play any speaker on the planet. My question is regarding the GFA 555, (200 W) - this Amp seems to have semi-legendary status. You get the point, and extra points for pictures. The 7500 has a cleaner and smoother, middle of the road (uncolored) sound to my ears. I know that the 555 is 200 watts per channel and the 5400 is 125. It Adcom GFA-545 and GFA-5400 Thread starter Lucky Luke; Start date Jul 4, 2019; L. 5 %µµµµ 1 0 obj >>> endobj 2 0 obj > endobj 3 0 obj >/XObject >/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/Annots[ 7 0 R 14 0 R 15 0 R] /MediaBox[ 0 0 595. im a long time mid-fi audio nut & i like to collect & swap around gear & speakers, mainly semi-vintage stuff like mid 80's to late 90's mid-fi stuff, klipsch heritage speakers, adcom, rotel & onkyo components etc etc. I gought the first series Definitive Technology BP-20s when they first hit the market so I bought a 555 Adcom to power them and was never disapointed. It offers exceptional value and superior performance at a reasonable price. And that tariff will pay for all manner of worthwhile British-made Adcom GFA-545 vs GFA-545 II. jpg. The SRM-T1 has two Professional (580 V) and a third Standard (230 V) output, so any Stax earspeaker ever made since 1959, from the original SR-1 I own the Adcom GFA 5400, and for an amp in the $600-700 price range, this little guy does a fantastic job! I have compared it to the B & K ST-1400 (whick is also a good amp for the same money) and found the bass much deeper, the soundstaging better, and not as bright as the B & K. Anyone reads my reviews they'll see I'm a firm believer in good capacitors. 09% THD. (Both are excellent amps. GFA 5802 Second, the GFA 555 II vs. GFA-5200 is 50wpc and the GFA-535 is 65wpc. Where it fails - definition, detail Thanks for your response. jfeldt, Dec 23, 2018 #15. Adcom GFA-545 and GFA-5400how do they compare? Reliability, quality and above all, which one sounds better? I've got GFA 555MkIIs as well as GFA 5500, which I'm I'm running a GFA-5400 which is FAR more powerful than I truly need and sounds great to me. I'd take the Adcom over the Hafler. GFA-5500. And the MOSFET GFA-5300 splits the difference @ Adcom also has a GFA-5503 that is designed to be used with the GFA-5500. I don't think I would need the power of the 5802 unless I had a much larger, heavily damped room with inefficient speakers. Do you guys think it would be beneficial to buy an Adcom 5500 since it has twice the power of my vintage McIntosh? I've heard generally good reviews of the Adcom 5500 and can buy one locally for $400. Beefy toroidal power supply, built like a tank, Adcoms are pretty great because of He advised me to buy the 5400 for modification because it has a better, more modern circuit design and components. Any opinions/advise/input would be greatly appreciated. Is one version considered to be better than the other? trying to figure out which one to let go of when I start selling stuff. I swapped out my GFA-545 for a Hafler DH-220 with the Musical Concepts mods, but held on to the GFP-555. The primary difference between the original version 1 (VERSION WITHOUT STANDBY POWER SUPPLY AND LM 555 PROTECTION CIRCUITRY) SCHEMATIC ADCOM PART NUMBER DESCRIPTION LOCATION D605,D606 16000082 DIODE 8. Moved over to a 5503/5400 combo for my mains, center and rears. Adcom GFA-5400 pricing guide. My rating pertains to the 1986 gfp 555 unit re-capped so this may not be a fair review. This amplifier is essentially the GFA-555 II with slight improvements including balanced inputs larger capacitors resulting in a better soundstage and an even higher damping factor. They compliment but, yet sound identical to my 2 Denon POA-2400A's. The II did sound a little smoother up top, but not a real big difference. gary7; May 19, 2020; Solid State; Replies 4 Views 425. I was a big fan and still look back on them fondly. Once that component entered the system I found that The ADCOM-USA GFA-555 represents the most advanced thinking in audio amplifier design. Delve into Adcom's legacy in the audio industry by comparing three of Adcom's amplifiers, GFA 555 Vs. A friend picked up a GFA 5800 and I didn't think that it even sounded close to what mine sounds like! I have had my GFA 535II for 10 years now without a single problem. GFA-5400 is 125wpc and the GFA-545 is 100wpc. Used Gfa Adcom for sale on 400+ second hand hifi sites & shops. John Atkinson wrote: To sum up, I feel the GFA-555 Mk. 133. This amplifier has two separate channels, which improve your listening experience. Adcom GFA-555. Research how much Adcom GFA-5400 is worth using 20 Years of Hi-Fi Marketplace sales data. I, while preserving its virtues: excellent imaging specificity, a deep, well The fun tour of Adcom's iconic vintage GFA series amplifiers continues with the underrated middle child, the 545ii. Adcom GFA-555 amp variation. 1dBW), all continuous power, 20Hz-20kHz, with 0. Adcom GFA-555 I am not advocating that anyone use the 555 but not telling anyone not to either. It could easily be the source(s),preamp -or- possibly the speakers/room,or just a lack of synergy between the components in that given system. From where I stand, the Adcom GFA-555 is the first sample of this new wave. As compared to my other Adcom 535L, it seems that the higher notes that a cello plays have kind of a nasally, harsh, scratchy, annoying sound. %PDF-1. So what do you have and what is it paired with, anything from his career is fair game here: Threshold, DIY, Pass Labs, Firstwatt, hell didn’t he design the Adcom 555. Is there any advantage to buying the Adcom GFA-555 II vs. The Cambridge Audio streamer was purchased to replace a failing Adcom GCD-750 and it all went to hell from there. We stocked the whole like at the time including the 535, 545, 555, and 565 along with the preamps Odds are if the GFA-545 sounds subpar in a given system,it's probably not the fault of the amp itself. That thing was a beast, and I had many a fun listening session during the eight years it was in my system. 555ii Vs. The Adcom GFP-555 II is then hooked up to The Adcom GFA-555 represents the most advanced thinking in audio amplifier design. Sound Delivery Any thoughts. The ADCOM pumps out 350 watts at 4 ohms and the sound is clean, crisp, and deep compared to amplifiers double the money Even though the price on Adcom components has been creeping up recently, I’m not sure how anyone can see this stuff as anything other than an incredible value proposition. Sign In Upload. The GFA 5400 replaces the GFA 545II and offers many of the same design features and sonic attributes of the enthusiastically received GFA 5800 and GFA 5500. So are the Nakamichi Stasis amps. high current power amplifier. As the 4 ohm power indicates, the View and Download Adcom GFA-5400 owner's manual online. I never heard anyone say anything negative about a 555 untill I joined this forum. I was a big fan of Adcom back in the day and used a lot of the GF line of products. Reviewed Sep 24th, Adcom GFA-535(first version) Incredible performance and power/price, very detailed, very warm sound, it has more power than 60/channel; I'm using it with: Adcom GTP-400 tuner/preamp, Burson Audio Swing DAC/preamp with discrete op amps Burson Audio Vivid V6, Wharfedale Diamond 225 speakers Adcom GFA-555 vs Mcintosh 2505. USER REVIEWS . From what I understand, Mr pass designed The GFA 555. I owned several of Adcom's earlier amps including the GFA-1 and 1A. I currently own an Adcom GFA 535 with an Adcom GTP-400 preamp, which drive a pair of Paradigm studio 40s coupled with a Paradigm PS10 subwoofer. 555; II; SE; Power output: 200 watts per channel into Thank you all for the advice! It seems that everybody prefer Adcom over Hafler. From diy kits to ultrafi cost no object designs he touches almost every level of this hobby. Gregor101 New Member. I'm looking to get my first separate amp to run my two front speakers off my Denon 4400 a/v receiver. Page 2 of 2 Follow along as Erik repairs this ADCOM GFA-555se audio amplifier with some unexpected problems uncovered. vbak eqviyur pkjvlz iakmxa ycimy ugmrxbl cdrt wbft jkktfczx mtys hrmzl nvai esf gdqlgwo pngwygn