dmagnan
Head-Fier
.................Haven't commented in a while because I've just been busy enjoying my setup!
I wound up getting the Wilsenton tube amps I was planning, and looooove the Expanse with the R800i.
Current chain is PC > USB > Bifrost 2 > R800i 8ohm taps > Hifiman adapter box > Expanse. I think I'm going to give the Denafrips Pontus II + Iris a try and see if I like better than the Bifrost 2 but damn, I can't see (hear?) it getting much better than this.
..... there's certainly enough presence to rumble my ears a bit, it (the bass) goes very low and is always tight, I haven't been able to get the bass to "fail" where it just comes up flat on this setup, the bass is always there exactly how the track calls for it. Having 45W(!) on tap with the R800i made a difference in bass over the already very powerful (by headphone amp standards) Jotunheim 2. As for treble, the background is so black and open, notes just seem to appear out of the void. It causes a lot of those "wait, is someone in my room?" moments, I hear people whispering in the studio on some tracks, fingers on strings, etc. Cymbals clash so clearly and decay so nicely, it's somehow a sharp detail machine and also so rich and full.
I really have nothing bad to say about this setup and think I'm at that point where it would take me being shown something better to even realize I'm missing anything, the point where there's no faults, it's just degrees of improvement/personal taste if that makes sense. It's just so enjoyable and passionate to listen to, I can sit and analyze details if I want and the details are very much there but usually I just get lost in the music. Hell, I even find myself enjoying songs I didn't like before just because they become so pleasant on this setup. Many nights going to bed at 2am because I get stuck in the "one more song" loop.
I'll close with a story, this was with the same chain but with my Buchardt S400MkII speakers, not the Expanse, but the experience is comparable. I was sitting at my PC, setting it up to test after putting in the new tubes, threw on a random track (Lo Vas A Olvidar - Billy Eilish), it was playing for 30 seconds, I turn around to see my girlfriend on the couch behind me with tears rolling down her cheeks. She was a bit embarrassed but I was like no, don't be! That's the best review this setup could get! That's the kind of experience we strive for.
This is a good description of the superb sound of a powerful and well designed triode vacuum tube amplifier using excellent tubes. Presumably, measurement-wise, with high levels of harmonic distortion, limited bandwidth, significant noise levels, and low amounts of feedback (this last a good feature).
Interestingly enough, I have a headphone amplifier for my DCA Expanse that is radically different in design, technology and measurements, the Sparkos Labs Aries discrete transistor op-amp design, and I would describe it's sound with my Expanse almost in the same words.
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