Adcom GFA-555 or GFA-555II...

Posted by EdAInWestOC (A) on June 11, 2012 at 12:29:55

In Reply to: Good Solid State amp for bass to go with my posted by bcguitar on June 6, 2012 at 08:14:48:

The good news is the original is a Nelson Pass design and that they sold what seems like millions of these. This is a very fine sounding amp and since they made and sold so many you can get them relatively cheap.

One word to the wise...there is a coupling cap on the input board that is the only instage coupling cap in the whole design. It doesn't matter much for a subwoofer purpose but if you ever use this amp for other purposes replace the coupling capp and put somthing like a WIMA or better in place of it.

The increased transparency will be obvious.

PS: This is not strictly speaking a Vintage unit but is getting pretty old and is a fine solution for your uses.
Life is analog...digital is just samples thereof

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Follow Ups Full Thread

Topic - Good Solid State amp for bass to go with my - bcguitar 08:14:48 06/06/12 (19)

Adcom GFA-555 or GFA-555II... - EdAInWestOC 12:29:55 06/11/12 (0)

If you are only going down to around 200Hz why go the hard way - airtime 09:42:10 06/08/12 (3)

200? these go down to 27 flat.... - bcguitar 13:32:29 06/08/12 (2)

RE: 200? these go down to 27 flat.... - airtime 15:11:55 06/09/12 (1)

just seems easier to buy a stereo amp since I - bcguitar 17:50:09 06/10/12 (0)

NAD or Marantz - airtime 09:10:32 06/07/12 (0)

Great bass amp, reasonable pricing - M3 lover 20:45:33 06/06/12 (0)

Mac, Adcom, Hafler, Heathkit - Ross 18:46:51 06/06/12 (0)

RE: Good Solid State amp for bass to go with my - Eli Duttman 17:27:21 06/06/12 (1)

Not much, maybe 500 - bcguitar 18:04:43 06/06/12 (0)

Here is the problem... - Crazy Dave 14:37:01 06/06/12 (6)

actually it goes up to 1200 - bcguitar 15:25:33 06/06/12 (1)

RE: actually it goes up to 1200 - Crazy Dave 09:00:03 06/07/12 (0)

RE: Here is the problem... - Bold Eagle 15:15:32 06/06/12 (3)

RE: Here is the problem... - Crazy Dave 08:58:58 06/07/12 (2)

The speakers have been together this way for - bcguitar 14:09:02 06/07/12 (1)

RE: The speakers have been together this way for - Crazy Dave 10:52:42 06/08/12 (0)

RE: Good Solid State amp for bass to go with my - airtime 08:52:25 06/06/12 (1)

not exactly sure what I am looking for but - bcguitar 12:06:24 06/06/12 (0)

Follow Ups

Adcom GFA-555 or GFA-555II... - EdAInWestOC 12:29:55 06/11/12 (0)

Adcom GFA-555 or GFA-555II...

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