Do I still need a DDC in between?


This is my current rig:

Wiim Ultra (DH Labs Mirage / Cardas Clear USB, 0.5m) → Gustard U18 (DH Labs HDMI 2.1, 0.5m) → Harmony μDAC (Mogami quad XLR) → Parasound A23 (Belden 5T00UP) → Wharfedale Linton

The sound is very good to my ears—excellent tonality, detail, and especially soundstage, with impressive height and depth. However, I’m considering trying the Volumio Rivo Plus released recently, which offers an I²S-over-HDMI connection.

My question is: would I still need the DDC (i.e., Gustard U18) in between, or would a direct I²S connection from the Rivo+ to the Harmony μDAC deliver comparable or even better sound quality? Have you had any direct or similar experience with this kind of setup? Any advice would be appreciated.

lanx0003

@lanx0003 sorry, I missed your question about the Wiim Ultra.  It went to Lincoln with my son, so I wasn't able to try it in my system. 

@sls883  No worry. I need to part with the Ultra now, as it’s going to my son tomorrow. I’ve been holding on to it at home, but he finally bought a turntable. I really enjoyed having fun with it over the past few months.  Thanks.
 

@lanx0003 I went back through these posts and saw Singxer su-6 recommended.  I looked at it and it doesn’t have a clock input.  That doesn’t appeal to me. 

@sls883  Same here, although it already has pretty low jitter and electrical noise at digital out — one of the best. I was more interested in either the U18 or the Micro DDC, since both support a 10 MHz clock, but the U18 offers much better value and it pairs so well with Ultra.
 

@lanx0003 well it took awhile for the uDac to get here so I've only had it in system for 19 to 20 days now. Last Sunday or Monday was the 1st time I noticed the dac adding some harmonic weight to notes..drums falling further back into the stage..some better separation of instruments in space. I was already somewhat happy with it & at the moment I know I'm keeping it. I really like the size & found a preamp that has been a whole lot of fun with the uDac. The Laiv isn't on the level of my Pontus 15th but I was never expecting that. I really had no expectations of the Laiv & I haven't been overly critical about it. I do love its small size. 

I have quite a few preamps but I bought a Schitt Freya Noval off the 2nd hand market. Bunch of people been raving about the Freya Plus for years & I just assumed it's a mediocre product..for whatever reason. I grabbed the Noval because of the enormous amounts of different tubes one can roll...& because I already own a bunch. When I first tried it it was ok. Lacked some resolution & wow factor but good stage & space between the speakers. After listening to it for a couple hours I busted into it & replaced some capacitors & upgraded the output caps. Not even my best caps but you need 4 of them due to the preamps balanced nature & I don't usually buy caps in quantities of 4. But I had four mundorf aluminum oils in a much bigger value than what was in the Freya. They were intended for 2 other projects but I had them on hand...it was destiny. I squeezed some 5.6uF in there & felt that should really help with its low output impedance & slightly rolled off bass. It made a huge difference. No "giant killer" but with the uDac I have had so much fun listening to music the last couple days. 

Soundstage has depth, dark space, & brought a different level of disappearance to the speakers. Dynamics that will make me flinch with certain tracks. Male vocals can get real chesty. I'm having fun listening to certain genres. And then the tubes used can add & subtract certain perceptions & sound emphasis. I'm pretty giddy about this unsuspecting Noval & uDac pairing. I'm only second guessing the output caps I used & probably could have improved it more had I been patient & spent some money. But for the price of these 2 pieces & the enjoyment im getting is pretty cool. 

I do have a question for you. How long til your uDac hit its sweet spot? 

And yeah, I've been eyeing the Rivo Plus since it came out. Heck I wanted the original Rivo. I was curious about the software though. We now have a U.S. Rivo dealer pretty close to me in Orlando. Hifi Boutique I think is the name of their store. They are known for doing trade-ins so if I go that route that could be helpful. 

We just switched to fiber internet & I don't have hard wire LAN near my streamers now. Switching to WiFi & my IFI NEO & ZEN stream both have issues. I'm either going to need to get hard wired again or find a brand that works well on WIFI. The NEO stream i2s output to the uDac was pretty good..bass wasn't the greatest though.  I don't know if it was the uDac or the streamer though. I was kept telling myself the uDac hadn't settled yet.