SOLD - Phase Linear 4000

booja30

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Joined
Jul 29, 2023
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Seattle
#1
Hello,

I am selling a Phase Linear 4000 amplifier with wood sleeve. I am asking $450.

It is in excellent cosmetic condition, no damage to the faceplate front, edges, knobs, handles. The wood sleeve is in nice shape but does have a veneer chip at the back edge of the top face. Inside it appears to be all original. I tested it with the matching Phase Linear 700B I am also selling. It wasn't an exhaustive test (did not test phono inputs, tape loop, processor loop, etc.) but it was producing sound through both channels, the volume, balance/fade (joystick), -20db muting, worked. Some controls including the volume were scratchy, so the pots could benefit from Deoxit F5.

Here is a brief video of the preamp being tested with the 700B:


Note that this preamplifier is around 50 years old, and appears to have all original components. If I were keeping it I would replace at the very least all the electrolytics capacitors, and clean all the pots and switches. Since I am not keeping it, and since it is so original and lovely, I would prefer to leave those decisions to the next owner.

I am located near Seattle and would prefer a local sale, but would consider shipping. The 700B on the other hand I going to try to avoid shipping if at all possible.

I am a new member here, but was made aware of this forum by members at AudioKarma where I am a member (crv00). Please feel free to ask any questions you might have. Thanks.

Some photos:

IMG_6351.jpg IMG_6352.jpg IMG_6353.jpg IMG_6360.jpg IMG_6355.jpg IMG_6356.jpg IMG_6357.jpg IMG_6362.jpg IMG_6363.jpg IMG_6364.jpg
 

Vintage 700b

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Mar 13, 2019
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#3

booja30

New Around These Parts
Joined
Jul 29, 2023
Messages
9
Location
Seattle
#4
Welcome aboard booja30.
Many of us are intimately familiar with your 1st generation 4000 preamp.
Both your 4000 and 700b look to have been very well cared for.
I wish you the best selling it.
Thank you! They are very nice and it is tempting to keep them and restore them. But my sense of rationality is winning at the moment, and I will find a way to be satisfied with my Sansui AU-717. :)
 

Vintage 700b

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#5
I haven't seen an AU-717 in a long time, but that is a solid amplifier.
Many of us here are die hard Phase Linear guys and love the WOPL rebuilds.
I have WOPL'd (3) 700b's myself....listening to one now! I have owned a 700b since 1978, so
I love them.
 
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