The Adcom GFA was designed for Adcom by Nelson Pass leveraging the International Rectifier HexFet T03 output devices. Nelson Pass designed these. I am considering changing(up grading)to Adcom GFA amp and GFP pre. I currently am using a Parasound HCAa and. ADCOM GFA – Power amplifier overview and full product specs on CNET.

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Be careful as they are easy to strip. Two of these mosfets had actually lost some gain, possibly due to heat stress, so I replaced them. Rivals the best class A amplifiers without spending too much money. The symptom was that I needed to turn the DC bias pot all the way to one side to get it to zero. TVs by Geoffrey Morrison 4 days ago.

Some notes about restoring a GFA-5802

Headphones by Steve Guttenberg 9 days ago. Show less Show more. Hooked to my subwoofer, it was utterly unconcerned with the large current demands, and delivered tight, effortless bass as a matter-of-fact.

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Adcom GFA 2 Channel Power Amplifier | eBay

I always replace power switches and relays just in case they are corroded over time. Alcohol may affect the thermal grease.


We delete comments that violate our policywhich we encourage you to read. The lowest-priced item that has been used or worn previously.

In particular, the uF 16V power-supply filters for the high-voltage supply are known fga-5802 die and cause a loss of bass response. But its price is 5x less! Slick, sleek, and stylish, the device looks right at home in your media room. Tidal offers three months of music for a buck Audio by Ty Pendlebury Dec 19, Audio by Steve Guttenberg 9 days ago.

Highly recommended for all speakers but superb on electrostatic. Adcom uses hex screws and they can be difficult to break loose.

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Adcom GFA-5802 2 Channel Power Amplifier

Bluetooth Audio Amplifier, 2-Ch. This repair and restoration is complete. Here’s the skinny on fatter AV bandwidth.

This top-of-the-line watt amp rivals the mighty Krell which I also own in its clean power and transparent sound. This amplifier is for audiophiles, clean crisp power, very detailed. Show More Show Less. Skip to main content. Smooth sounds came out of the studio monitors.


You will find that this Adcom GFA amplifier runs very warm even at idle. Nice quality fiberglass through-holes. This restoration was more of a tune-up as this Adcom GFA power amplifier is only about 15 years old.

Adcom GFA Power Amplifier – Repair And Restoration

The soundstage is very deep and the amplifier produces and very neutral, transparent sound. You should let the amplifier warm up for an hour or so before adjusting. Etymotic ER3, the Audiophiliac affordable headphone of the year The Etymotic ER3 is a bona-fide audiophile headphone, with a very attainable price.

A significant step up from their classic watt GFA Get the service manual and set the idle current to spec. Headphones by Steve Guttenberg 2 days ago. This device delivers when it comes to highlighting every sound, note, and rhythm with a high-quality product that offers dB signal.

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