Underwood HiFi Ultimate Mod Denon 3910

I own one. It's a fine sounding player. I swapped the OE tubes (EH6922) for Amperex 7308 and this sweetened the sound. The EH tubes were ok but they were too lean in the mids. The 7302s added some warmth.

The only complaint I have is of a very, and I do mean very, slight PS hum that can be heard on quiet moments during play. This might just be my player as I haven't heard anyone else make this comment.

I would characterize its sound as neutral with a lean midrange (even with the Amperexes), great bass extension and detail. I play mostly acoustic, acoustic jazz, chamber music and vocals through it. I find it does not really "rock out", if that makes any sense but on acoustic music it really pulls the details and the intimacy out of the CDs.

I have a pair of Mullard 6922 I will swap in at some point. I think they may add a bit of bloom to the mids which might be nice.

As for working with Wally, Chris and Glen? These guys are great. My first player arrived DOA (shipping damage) but with a phone call and a few emails, I had a replacement in a week. The replacement has worked flawlessly since.

Hi Ed,
Regarding DVD-A, DVD-V and SACD multichannel performance, I find the 3910 does a tremendous job. It might just be the subwoofer that gives the player that added rock and roll umph it lacks on straight 2 channel CDs. Or maybe it's the added resolution as I do find SACD and DVD-A 2 channel more "meaty" than the usual CD sound.

Have you investigated the mods and how they work with MCH output? Only the front 2 channels are tubed. The remaining channels benefit only from the PS upgrades unless you opt for the additional "level 2" mods for them. I didn't go this far. Do I miss them? That's hard to say. I doubt my MCH speaker set up is likely to make these mods audible anyway.
Sounds, though, like you might want to go for the MCH mods too.

I have a non modded 3910 that I have in another HT system and I can say that for what ever reasons the modded player has better video performance too. I can only guess it's the upgraded PS at work here.

When my first player arrived DOA I was asked by Glenn to open the unit and do a bit of fault checking. With the top off you can really see the quality of the mods - they look OEM in every way. Whatever happened to the player to kill it you could tell it wasn't an issue with its build, it's all top notch work.