For your consideration an enhanced Adcom GFA-555ii (Which I affectionately call the GFA-575). The unit is in A+ condition. The following upgrades have been made. • Potential upgrades: (Not yet made to the unit)• Install Soft-start board.• Install larger 22,000uF or 27,000uF main caps(Soft start board needed as well as upgrading the bridge rectifiers to 35A or50A)• Install speaker protectors/ relay The output now is over 320 watts RMS into 2 channels at 8 ohms and 615watts x into 4 ohms. Tested with a steady state sinewave at 20Hz prior to clipping. My AC mains had dropped to 115v, or this output might have been more.The design vision for this upgrade was to make the design more reliable, and able to drive low impedance loads with Authority with lower distortion and more power.

For your consideration an enhanced Adcom GFA-555ii (Which I affectionately call the GFA-575). The unit is in A+ condition. The following upgrades have been made. • Potential upgrades: (Not yet made to the unit)• Install Soft-start board.• Install larger 22,000uF or 27,000uF main caps(Soft start board needed as well as upgrading the bridge rectifiers to 35A or50A)• Install speaker protectors/ relay The output now is over 320 watts RMS into 2 channels at 8 ohms and 615watts x into 4 ohms. Tested with a steady state sinewave at 20Hz prior to clipping. My AC mains had dropped to 115v, or this output might have been more.The design vision for this upgrade was to make the design more reliable, and able to drive low impedance loads with Authority with lower distortion and more power.

Welcome to Audio/Video Archives, the largest home of audio literature available on eBay! This Advertisment is an exact reprint from 1991, it is printed on matte photo paper and is in Excellent condition! The Picture is the picture of the actual item. It is a beautiful piece of Audio History. I have THOUSANDS more from every major brand of Audio from 1950 up to now. ---Satisfaction is GUARANTEED at AV Archives! Take a look at my feedback for satisfied customers! I have been open since 2007 and have sold THOUSANDS of Ads, Reviews, and Brochures to satisfied customers. ---I Ship Worldwide and combine shipping, each additional item is just $1 after the first is paid. ---Each Page is 8.5 by 11 unless otherwise noted in title. ---Single Page, Single Sided Ads, unless otherwise noted in the title. ---These Ads are perfect for framing and placed in your Audio Room. ---I have a HUGE Vinyl Record Store with Thousands of Collectable records, and MANY First Pressings/Audiophile LPs. Just click on my Vinyl Record Store link on the left under categories. Email me for any specific questions, You will hear back from me usually within 4 hours, THANK YOU! Greg Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.

For your consideration an enhanced Adcom GFA-555ii (Which I affectionately call the GFA-575). The unit is in A+ condition. The following upgrades have been made. • Potential upgrades: (Not yet made to the unit)• Install Soft-start board.• Install larger 22,000uF or 27,000uF main caps(Soft start board needed as well as upgrading the bridge rectifiers to 35A or50A)• Install speaker protectors/ relay The output now is over 320 watts RMS into 2 channels at 8 ohms and 615watts x into 4 ohms. Tested with a steady state sinewave at 20Hz prior to clipping. My AC mains had dropped to 115v, or this output might have been more.The design vision for this upgrade was to make the design more reliable, and able to drive low impedance loads with Authority with lower distortion and more power.

Selling mine Adcom GFA-555 II to make room for new toys. This amazing amplifier will come with Adcom ACE 515 AC enhancer. The amplifier delivers 200W per channel and the sound quality is very impressive. This amplifier could power a wide range of speakers with no problem. The unit will be ship using Ground service. *For international buyersPlease contact me before buying to confirm if I can ship to your country and for pricing. Import duties, taxes, and charges are not included in the item price or shipping cost. Buyer is responsible for these charges. Contact your local Post Office or Customs Office for information concerning import duties.

Adcom GFA-555II, excellent condition, bridgeable, great for 2 channel, or mono block, fully functional, cosmetically excellent200 wpc into 8 ohm600 wpc into 8 ohm bridged

Used. Powers on immediately (see power light in photo). I never actually hooked any stereo equipment up to it, so I cant comment on anything else.

Adcom GFA 555 ll in excellent condition with all of the original manuals and marketing materials. NO original box. Will be well packed. Please see pictures as they are part of the description. Ask any questions before bidding. Tested and working.

Tested and in working condition. There is a name inscribed onto the unit in 4 different places that is pointed out in photos. Overall fair condition, could use some minor cleaning. Item is used and in working condition. Item is described to the best of my understanding but may have minor scuffs or scratches not noticed in inspection. Anything noticeable will be pointed out in photos and mentioned in description. I do my best to be as accurate as possible and would never intend to mislead anyone. If there is an issue with an item please reach out to me to resolve the matter and I will do my best to correct it. Most ECM’s and factory radios will need programmed. Please do your research before purchasing. All parts are warrantied for 30 days unless otherwise stated. Warranty covers the part and unfortunately not the labor costs. Electrical items are generally shipped with cut off wires from the connectors. This is not done to inconvenience the buyer in any way but as a courtesy to the buyer. If your connector is broken splice one of the included pieces in, if not disregard the item. Most items will ship same day as purchased unless weekends, holidays, or after 3:30 pm eastern time. Seller retains the right to ship USPS, UPS, or FED EX depending on the items size, weight, and destination. If you are unsure on the fitment of an item feel free to send me a message, and I will do my best to figure out if it will work for your application. I strive for 100% positive feedback and will stand behind anything I sell. Disclaimer- Used parts may have rust, grease, dirt, dust, etc. I do my best to clean things up before they are posted but unfortunately they are never perfect. 624

ADCOM GFA-555 II (Most famous sought after classic by the discriminating audiophile) BETTER THAN NEW INTERNALLY- BEAUTIFUL CONDITION OUTSIDE Want to save a bundle on this amp contact me using the blue letters on the last picture Here is another fine offering from the Audio Labs of Morris Electronic Repair Boutique This ADCOM GFA-555 II is a very rare classic. Plus you will not find many of these around for the lucky people that own them keep them! The design and power is second to none. At 200 watts per channel into 8 ohms, this baby will light up your Wilson Audio Sophia Series 3 speakers or anything else you may have in quality speakers. This is a very HIGH CURRENT amp. If you owned or liked the 555, you will love and go nut’s over the 555 II. The awesome sound stage and clean audio with super low THD, will knock your socks off and blow you away. I personally would put this 555 II up against the big boys like Krell - McIntosh - Jeff Rowland - Classe Audio - Etc. It will hold it’s own, if not easily surpass! BUT WAIT THERE’S MORE This particular GFA-555 II is very special, it has been upgraded with a Brand New double sided audio driver board with all brand new audio grade 1% tolerance components. Make no mistake this GFA-555 II is not your Dad’s 555 II. It will surpass anything out there in the 555 II world. It’s sonic sound stage is nothing short of awesome. If you have quality speakers & pre-amp to run this, you will lack for nothing in incredible listening pleasure from this power amplifier. This Amp is Perfection in Audio Reproduction. I am a one man shop, with 30 years as a electronic tech, so each piece of high quality audio equipment gets my personal attention, of which I repair, clean, adjust, and inspect everything as if I were keeping for my own. I have personally been completely through the internals of this 555 II power amp, insuring everything is to factory specs. I leave no stone unturned. So you can buy with confidence knowing you are going to receive a very high quality amplifier in perfect condition electronically. This unit (after initial check out on a Sencore PA-81 analyzer) has undergone hours of testing under load, driven by a Carver CD TL3200 music source, into a Harman Kardon 825 pre-amp and pair of Paradigm Esprit B/P 8 ohm 300 w Towers. PLEASE NOTE: When I refurbish a amplifier, I don’t just repair the problem and sell it. I completely disassemble it, meticulously clean everything, (just check the pictures) then I use Deoxit D-5 ® on all connections that needs this process. I make the internals better than new, so that you will have many-many years (min 25) of enjoyment from your new amp, without component failure or component degradation. (Excluding) shorted speaker wires, inferior speakers that can’t handle the power, or turning up the volume to the degree that you can fry eggs on the rear heat sinks. Or blow the windows out in your house. :-) All four electrolytic’s 47uf @160wvdc have been replaced with new Nichicon electrolytic capacitors upgraded to 100 uF 160 wvdc audio grade on the power output PCB’s. Also 4 .I uF 400 polypropylene caps were installed in parallel with the bypass caps.The driver bias voltage was adjusted to 9.5 mV per side.The driver transistors 4 each were upgraded with a higher break down voltage for more headroom.The rail caps have been tested as follows:C1 rated at 15,000 uF and allowable 9,000 uA leakage. Tested 16,400 uF / 180 uA.C2 rated at 15,000 uF and allowable 9,000 uA leakage. Tested 16,100 uf / 190 uA.C3 rated at 15,000 uF and allowable 9,000 uA leakage. Tested 15,800 uF / 190 uA.C4 rated at 15,000 uF and allowable 9,000 uA leakage. Tested 16,500 uF / 180 uA.The S/N# of this unit is 037401820This unit draws .6 amps at 115 VacThe DC offset is .2 mV on the left and .2 mV on the right this is super low, darn near perfect. I have also installed a IEC power receptacle and will come with detachable IEC power cord. This 555 II is bridgeable to operate in mono block mode, just by switching a small switch on the back plate. PLEASE NOTE: I only ship to the US, No international shipping. As always I pack everything with the best of materials, so as to thwart the gorilla UPS handlers. It will arrive alive and unscathed. But you will appreciate the effort when it arrives undamaged. The Service manual & Owner manual will be included (reproduced from the original) plus amp spec sheet of the final parameters, along with a cover letter, so in the unlikely event you should have an issue, or even a general question you can contact me directly at my real Email address. Thank you for taking the time to read all my verbiage, this is one High Current Fantastic Powerhouse of an amplifier in like new, excellent condition. Any issues you should have I take care of them, Pronto! Period! This is why I maintain a 100% positive feedback.I answer all submitted questions.

You are buying a ADCOM GFA -555 II power amplifier - Works Great TESTED Used condition This unit is working properly About cosmetic it shows some scratches and minor dents from normal wear We removed the top cover to take pictures of the inside Pictures are part of the description so please see them carefully and make your own conclusion about the item’s WHAT YOU SEE IS WHAT YOU GET Thanks for looking selling as the pictures shown. ABOUT SHIPPING Shipping Within US 48 Continental States Only (No shipping to Puerto Rico, Alaska, Hawaii) will be shipped by Fedex UPS Or USPS Ground according your location with free tracking number and It will be shipped thru the address provided by eBay so please make sure it's right during checkout! Feel free to any questions. NOT SHIPPING TO P.O BOX ADDRESSES For International buyer we will use eBay Global shipping option no exceptions. ABOUT RETURN Please contact seller if you have any inconvenience with your item, before open an eBay case or leave a negative feedback (There are many ways to solve any issue) Is very important for Us make our costumers happy’s. Buy with confidence. ?????TOP SELLER ????? • See other items in our eBay page!!! https://www.ebay.com/str/jarvingracestore

Adcom GFA-555 Brand: Adcom Model: GFA-555 Functionality: Condition: Check out our other items! Be sure to add NCJW/LA to your favorites list! so you do not miss any listings!We want this to be a pleasant buying experience. If you are not happy with your purchase, please contact us.

Up for sale ADCOM GFA-555 II Power Amplifier. Amplifier works fine. Visually in excellent condition, near MINT. Comes with the original box. For shipping it will be double boxed. Thanks!

Get ready to experience an amazing listening experience with this top-of-the-line ADCOM GFA-555 II Power Amplifier. This high-quality amplifier offers superb sound quality, 2 output channels, and stereo L/R RCA audio inputs. The sleek black design adds an elegant touch to any home audio setup and the amplifier class A ensures a clean and powerful sound without any distortion. Made in the United States, this ADCOM GFA-555 II Power Amplifier is a must-have for any serious audiophile. Non AI: I purchased this amp a little over a year ago, tested, from a reputable audio dealer (see photo). I have only used it a few hours since receiving it. It sounds great and is excellent cosmetic condition too. I am pretty picky and I had no problems with this unit. I am only selling to finance a speaker build.