Comments on: Vintage 1960’s Guyatone GA-530A Guitar Amplifier

By: Lorenzo Lozano

Lorenzo Lozano — Tue, 06 Apr 2021 02:46:21 +0000

Hello I’m a proud owner of a Guyatone 910 Concert I’m sure the only one in California an Nevada this amp sounds amazing I had (amp hole )from Burbank recap went threw it all. He couldn’t believe this old lady gave it to me for moving her it’s a gem ??

By: Robert LOSONCI

Robert LOSONCI — Fri, 18 Dec 2020 08:49:31 +0000

Dear Friends
I searching for the shematic of the Jazztone GM-450 Japanese vintage guitaramlifier.
May be somebody can help. Regards Robert fr. Vienna

By: Lorenzo Lozano

Lorenzo Lozano — Wed, 12 Aug 2020 01:01:29 +0000

Hi I have a Guyatone GA910 concert golden series I not find anything on these amps I just had it recap and it sounds amazing do u no how I can tell how mNy watts it is? It has 2 power tubes one rectifier tube. 5 pre amp tubes. 10 tubes in all 12 inch speaker any info thank u

By: Tyler Baker

Tyler Baker — Sat, 20 Apr 2019 09:43:47 +0000

I have a vintage 1960’s Guyatone guitar tube amp, model 440 S. It works great and made by Tokyo Sound. I’m having a hard time finding the exact value of what it’s worth. I know they are quite expensive, with similiar ones sometimes in the thousand dollar range and more. Could anybody shed light please?

By: Chris P. Daellenbach

Chris P. Daellenbach — Thu, 28 Mar 2019 08:03:07 +0000

I just came across a guyatone reverb pro and zip60 is the model i believe. Its in mint condition, looks brand new in fact. I can’t seem to find one anywhere and would like to know what its worth. Do you have any idea? Can you point me in the right direction?

By: Rolando

Rolando — Sat, 28 Jul 2018 01:29:52 +0000

I have a guyatone Ga-530 want get new tubes thanks for tips

By: Mark

Mark — Sun, 21 Jan 2018 12:13:26 +0000

Hello, I am a proud owner of guyatone ga-830 tube amp. You say yours is from the 60s. What about the serial number. Mine starts with 81 so I guess its the production year?

By: Adrien Patenaude

Adrien Patenaude — Wed, 17 Jul 2013 00:57:37 +0000

I have a Guild MasterAmp Model 50, with a Jensen P12R from 1959 that has a japanese chassis, 2 6Aq5a’s. Have you ever heard of such an amp. I can send you pics if you like.

By: rob roberge

rob roberge — Wed, 03 Nov 2010 05:20:09 +0000

Hi Al-

Sorry it’s taken me so long to answer. The 6AQ5’s are cheap (check on Ebay–you can get great NOS ones for very little money)…and a lot of people compare them, tone-wise, to a lower wattage 6V6 in a small bottle. Gibson used them in a few amps. They sound very cool.

The tremolo is probably just a resistor or capacitor in the circuit. A tech could fix it very cheaply. All best

Rob

By: Al Atkinson

Al Atkinson — Sun, 20 Jun 2010 20:35:49 +0000

Hi, I enjoyed your article on the Guyatone GA530A, I have a GA520, and it has been put away for about 15 years. I used to use it in the late 80’s thru the early 90’s. I recently got it out to use but the output tubes are missing. Also in 1993 the tremelo/vibrato stopped working. There is a schematic with the amp and it says the 2 output tubes are 6AQ5X2.

Are these hard to find, or can I use different ones?
Is the vibrato circuit hard to fix?

This amp is a great sounding amp when it was working and the cabinet and face plate are in excellent condition. The circuits inside seem quite clean also.

I would appreciate any comments you have.

Sincerely,
Al Atkinson