Hagstrom Guitars Ha gström Gitar


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2020 - Due to a life limiting illness, this site will remain until the next renewal date but may not be updated again.
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GA85 Reverb, Model 1700 Solid State Amp - 1967

From what I gather, this is the origin of the Reverb unit out of my old Hagstrom GA-85 1700 Reverb Amp from 1967...

I hope to confirm this is the original unit, as sadly it seems to be dead... the rest of the amp is completely spot on and fab sounding still. I'm not certain, but I'm told this was the world's first solid state guitar amp! 

But then Hagstrom did like to be first at things...  Like the later world's first synthesiser guitar in partnership with Nile Steiner and Ampeg. You can see pictures of the amp further down the page, and more on the amps page on this site.

Based on the website for the current company:
Sound Enhancements, Inc. accutronics®
185 Detroit Street Cary, IL 60013 USA voice: ( 800 ) 284 - 5172 (USA)
The Tube Amp Doctor, Mittelstrasse 1, 67547 Worms, Germany Phone +49-(0)-6241-9049-0 (Europe)

The industry standard for years, the Type 4 is still manufactured today using Hammond’s original design. Four counter wound and coupled springs deliver superior mechanical performance and the classic sound that helped make the Fender Twin Reverb Amps famous. Outer channel dimensions are 16.75” Length x 4.375” Width x 1.313” Height.

Hammond type 4 Reverb (Gibbs Manufacturing, Winsconsin - part of Hammond)
See further down for the label detail from under the yellow foam shown centre above.

See further down for the excellent quick reply

So now we can make the progress to bring this back to full glory!

Under all that foam lay my answer...

Stuck on the side lip of the reverb...

Ny (New) 19/4 '67 and some initials
This was from Sweden not by Gibbs hence the Swedish "Ny"

Type 4 Reverb drawing (Diagram courtesy of Sound Enhancements website)

The letter, C, stamped in ink is the old Gibbs model number.

The unit should be a 4FB2A1C.

Regards, Cal Shuett
- Sound Enhancements, Inc.

4 for Type 4
F = 1475 Ohm Input Impedance
B = 2250 Ohm Output Impedance
2 = Medium (1.75 to 3.0 sec)
A = Input Grounded / Output Grounded
1 = No Lock
C = Vertical Connectors Up


We'll keep you posted on the progress and outcome!

horizontal rule

...and here's the amp itself:

The 1967 Hagstrom GA85 Reverb
Model 1700 2 x 12" (85watt solid state amp)

Chris with the amp and one of the Hagstrom Scandi guitars here in the Hagstrom UK collection


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There's nothing like a REAL original Swedish made Hagstrom (and there are loads around), but if it 'floats your boat', or you can't find an original then who are we to say?

Plenty has been said already and
will be said forever forward probably.
Only you know what's right for you!