dCS Rossini vs. Berkeley Reference dac 2

The Berkeley upgrade is Substantial, not subtle. You will be pleased. I have no cabling issue. If I drive my Atma Sphere MA-1 amps, the sound is both much more dynamic and focused using the Ayre preamp in the chain. So I am not universally bemoaning the use of a preamp. Preamps have merit. I'm just saying that I prefer the sound of the Berkeley Reference 2 DAC driving my Ayre MX-R Twenties directly, with no preamp. I have two runs of balanced Synergistic Element CTS, so its a piece of cake to A\B the sound with or without a preamp. With the Ayre preamp in the chain, the sound is more focused, so I prefer the more airy Synergistic presentation. With the Berkeley driving the Ayre amps directly, I prefer a shade more focus, and run Audioquest WEL. I hear more details, and more realistic harmonics around those details without the preamp, in this case.

Sounds great!  As always, every room, system and ear is different.  I will certainly A/B with and without the KX-R twenty again after my Berkeley update.  I am #79 in the queue and they have temporarily suspended the conversion process until they finish the MQA upgrade.  There is a groundswell of glow over MQA but I haven't heard samples from a fully compatible system so I don't have an opinion.  But kudos to Berkeley for having a pathway to improvement for existing owners, even though they always (should be in caps) take longer than their well-intentioned estimates.  Happy listening!

Yeah. I was #82 in the queue. Got tired of waiting. Contacted my dealer, Galen Carol. Swapped my V1 for V2 for $8K. Don't regret it for a second. The Reference 2 sounds like a whole different processor. When I got it, I had my old V1 in house also. I placed them both in my rack, and was prepared for an A/B session. I listened to three familiar songs thru the V2. It wasn't even fully warmed up. Then I simply packed up the V1 and sent it to Galen. No comparison needed. Its a No Brainer.

Imgoodwithtools, I appreciate your informed input on this thread.
Would you mind sharing what,if any,power conditioning you used or
tried with the Berkely 1; and what differences you heard? Thanks.Happy listening.

I haven't spent Big Money on power conditioning. I live in a small town out in Wyoming and the power is quite clean.  But since you asked, I run an API power wedge, an older model with three isolation transformers. And I run a Shunyata Venom cord. I do plan to check out the Shunyata Denali system. For the price, it looks intriguing.