Fellow Decware friends. I am a new entrant into this esteemed group, as a recipient of my first Decware amp; the ufo2.1, through Steve's latest auction. My excitement is beyond words, as this exact amp was that which I listened to when visiting Steve and Decware back in April, just prior to Axpona. Hands down, Steve's listening room was far superior to that of any Axpona room, and since then, I've been counting down the days of slow movement across the pages on the waitlist. I am still a few years out, however I am fortunate to have won the auction for the first tube amp I've ever listened to. Thank you Steve for your priceless contributions to this hobby.

To this community, I have a few simple questions; pardon my ignorance.

1. What are the 4 switches in front of the Input RCAs in my image? Since this is a custom piece, it looks different from the standard UFO2.1. I am pretty sure one set is the input selector but curious about the other. I wish I could share pics but I haven't reached my post count yet.

2. I currently have my Eversolo Dmp-A6 ME connected directly to the amp via RCA. Should I set my volume on the streamer to pass through to control the volume solely with the Amp?

3. How would I hook up a Rel subwoofer that uses a high level connection? Just plug in the spades to the binding posts?

4. The Klipsch 600M2 temporary as I wait for Omegas, however I was curious about the bass response. The bass seems quite distorted when I turn the volume know beyond 66% or so. Is that normal? I imagine this is more a limitation of the speakers, or does it get better with time, or a sub?

5. Any other word of advice you'd have for a first-timer? A ZRock? Other components to think about?

Of course I will remain in line for a Tori or ZMA down the line but I am at absolute peace and bliss with this one. Thank you all.

-AB

Hi Abhishek. Welcome and congrats on your new Decware amp. CAJames gave great advice, but I’ll try to add my 2 cents.

First, I took a look at the photo in the email for the auction and concur. The two in the back are likely the speaker impedance switch’s and should be mirrored. You can adjust while listening to hear which setting you prefer. The front two are likely the source selector and input tube bias switch. This is my speculation. If you still have trouble, I recommend a call to Steve to confirm.

I connect my Eversolo to a Decware preamp, so use the volume pass through and adjust gain/volume between the CSP3 and amp. You can try both ways and play around with the variable output on the streamer to see if you hear a difference adjusting the streamer down and the amp up or vice versa. Turning off the pass though does allow you to control volume remotely.

I have a REL sub connected to my UFO25 using high level connections. I also use Omega speakers (SAM’s). The Omegas go pretty deep in my room, but the sub definitely helps to fill in the bottom down to 30hz and gives some more “atmosphere”. You’ll need to play around with placement and crossover and gain settings on the sub to get it to pair seamlessly. Once you get those magic settings, it truly does enhance the experience greatly. I use banana plugs for the speaker connections and spades to connect the REL to the amp. Red cable to right positive and yellow to left positive. Connect the one black wire to either of the negative posts. The issue you will likely have is loud hum from the sub. The Zen amp outputs are not connected to ground, so to correct the hum issue you will need to use a jumper cable to connect the two negative posts together. This should fix the hum. You may want to revisit the subs crossover/gain settings once you have the Omegas and they have a couple hundred hours of play on them.

I suppose the distortion at 66% volume is clipping. Steve outlines this in the UFO2 manual, indicating that with 2 volts out from the source, which I believe is what the Eversolo outputs using the RCA connections, the amp will clip at 2/3 volume. Earlier than that with more voltage from the source. Checking the meters as James outlined is good advice.

Spend some time to get familiar with your system as it is now and read up on other options for next steps. I agree that a tube preamp would be an excellent next step. I lived without mine for a month in April and realized how much it brings to my own system.
LB