Because I’m terrible at self-promotion, here’s a video I should have posted last month!
YouTube blogger XRayTonyB did a three-part video series on repairing a GFA-585 using my boards!
As usual, he goes into great detail on the restoration process, and gives all kinds of generally helpful electronics troubleshooting advice along the way. Tony’s channel is loaded with videos about restoring some really interesting gear like vintage receivers, amplifiers, test gear, etc.
This was not a paid promotion, and there is no commercial affiliation. Tony just bought boards from me like any other customer.
This is perhaps the nicest amplifier I’ve ever restored! A GFA-585; The first of its kind with newly designed replacement input boards. (To fix the infamous leaking capacitor issue.) And I can’t believe I’m saying this, but…
It’s for sale. $1800. Update:SOLD to previous customer, Bill.
Also, I wanted to share what I know about restoring a GFA-585. I hope this is useful to others who are tweaking their GFA-585’s, or installing a set of my replacement circuit boards.
Long time, no blog! I’ve been super busy with Adcom amp and preamp refurbishings, and obsessing over new circuit board designs.
Here are completely new versions of the GFA-565 input boards, and for the first time, I am offering fully assembled and tested boards for $380. (Please allow up to a 15-day lead time. They are hand-made, by me in my shop.) Click here to buy.
Coming soon: (These items are all available by request, just not yet in the store.)
GFA-535 MK1 Power Supply board
GFA-535 MK2 Power Supply board
GFA-545 MK1/MK2 Power Supply board
Unbalanced stereo line driver. One stereo input, four stereo outputs, buffered and driven by OPA2134 op-amps. (For running long unbalanced patch cords, or adding buffered tape outputs to a preamp, among other uses.)
Bipolar audio power supply, +/-15V. Super low noise, low impedance and high speed. Based on TI LP38798.
Thanks to all my customers for the continued success of Hoppe’s Brain. I am so happy to be doing this for a living.