CAL Alpha DAC: Stock vs. 24/96 upgrade

Michael, I emailed Approved Audio Service in Litchfield, CT. They emailed back and said they can do it for $500.00 + shipping.
Kevin

Routeman, I considered doing this myself as I had a Cal Alpha original DAC. The general feedback that I received on this same mod (about 15-18 months ago) was some liked it better modded and others didn't.

Overall though, the concensus was not to pay for the upgrade but instead to just buy the 24/96 version and see which you prefer. Sell the one you don't like more. The difference in value between these two DACs is only about $150 (then, 15-18 months ago), so based on this, it is more cost affective approach.

FWIW, I never got the 24/96. I eventually went with a Kora Hermes (which I loved). But that Cal Alpha is a great DAC, especially for the price! Be very careful when shipping that unit, you need to place a piece of foam on the transformer to support it. It has a tendency to crack at the connection point and then you have a couple hundred dollar repair.

Ckoffend, How about that! I never heard about supporting the transformer when shipping. Thank you for that info.
Kevin

Kevin,

I have 2 "stock" Alphas and just last week purchased an upgraded Alpha on Audiogon. I did what CKOFFEND suggested above and bought an upgraded version to compare. After listening for a week I have to say that there is a difference but not a $500 difference. If you invest in good tubes you will get more bang for your buck (IMHO). I used the Mullard CV4004s that came with my new DAC in my original Alpha and was floored (approx. $180 at Upscale Audio). I use Telefunkens and Mazdas in my other 2 DACs and am very happy with the results. These DACs respond well to NOS tubes and I highly recommend tube rolling before dropping $500 + shipping. I am very happy with both versions and can't believe the bang for the buck they offer.

Buda, Thanks for the info. Are you saying the Mullard CV4004's sound great in your stock AND upgraded Alpha? When I purchased my Alpha it wasn't being used by the previous owner for quite some time so it didn't sound that good the first couple of days I used it. On the third day something happened: It smoothed out & just sounded wonderful. So for now the Eico/Mullard tubes are staying in it. That doesn't mean I won't tube roll.
Kevin