trying to locate a schematic for a Van Alstine preamp one

[doctor underhill]

i have picked up a clean Van Alstine preamp one and am trying to locate a schematic for this unit.

 

[raindance]

i have picked up a clean Van Alstine preamp one and am trying to locate a schematic for this unit.

My understanding is that you might find the the info, but it uses proprietary potted modules that are hard / impossible to get. There's an old discussion (2012) about these on Audiocircle from someone who appears to have a service manual.

 

[DonH56]

AVA is still around AFAIK, although Frank passed away last year. You might try asking them, and letting us know what you find. He had a lot of influence on my early'ish days as an audiophile, and helped me design an early ABX switcher.

Audio by Van Alstine Announces New Leadership

Woodbury, MN — 10/3/2025 — With the passing of Frank Van Alstine earlier this year, Audio by Van Alstine (AVA) has put in place a new leadership team who are keen to uphold the principles which Frank set forth nearly sixty years ago, while building on the spirit of his legacy. We remain...

avahifi.com

 

[JeffS7444]

I once owned the matching power amplifier, but when I queried FVA, he let me know in no uncertain terms that he wanted nothing to do with products from "that" company. He might've said something about his name being used on circuits he didn't design. Couldn't get any other info from FVA in the 1990s.

 

[JeffS7444]

If I owned that preamp (or better yet, a Mark Levinson ML-1 like the one I owned!) and I were up for a DIY challenge, I think that rather than reverse-engineer the modules, I'd simply figure out what the various connections did, and see if I could find a compatible replacement circuit I could more or less drop into place, possibly taken directly from Texas Instruments datasheets.

 

[ErVikingo]

All I see on the net