Headphone amps

I would definitely upgrade to Senn 650s--I did on the advice of some Headfi posts & found them to be a major improvement: a fuller but not overwhelming or forward sound. The 600s sounded thin to me. I use the newest version of the Headroom Max (with the new "reference module")with the Zu Mobius cable & I am very satisfied. Tubes are nice but you have to plan your listening because you really can't leave them on all the time, I think, & they need to warm up. Make sure you get good interconnects from your source.

I would have really liked a set up like Marco's and did look long and hard at the Micro zOTL. But I was doing this just so I could watch DirecTivo late at night without disturbing anyone. Functionality, price and nice looks were my main criteria so I opted for a Channel Islands Audio VHP-1 with Koss KSC-50 ear/headphones. For quiet TV listening I like this combo a lot.

The microZotl works just fine with the Senns (my second HP rig), but may be a little laid back for some. The 650 is better. Hard to find the micro used, but they do turn up on Head-fi occassionally. Cheaper than the RKV for sure.

Danlib1,
I compared it to the Antique Sound Labs MG Head DT OTL mk III (say that fast 3 times) and the Grado RA-1. I preferred it over these two with the stock tubes. The Woo sounds even better with the Mullard tubes as well. IMHO, I don't think you can beat it for under $500.

I also used it as a preamp for a month while I was between preamps. Although it didn't embarass itself, sounding quite sweet at times, I wouldn't recommend it as such. It was a bit noisy and limited operationally for my preamp tastes. I had just sold my BAT VK-31SE, so it is quite a step down from that, as one would expect.

As for customer service, I wouldn't say they are the best either. The unit comes with no manual or power cord. If you buy direct from Woo Audio, they e-mail you a 2 page manual, which tells you there is no power cord. I haven't had any service issues, so I cannot comment on their response. It did take 3 weeks after my order to receive my unit. So overall, I wouldn't say that customer service is their fortay. They do make a good sounding head amp though.

Cheers,
John

I am currently using the same source and phones in my office setup, and can readily endorse the microZOTL. I do agree that it is a touch more laid-back than some SS amps I have heard (Headroom). Nonetheless, I find this to be a good match with the Ring DAC of the Arcam, which I find to be very detailed, yet forward. Good luck - a great headphone setup can amaze and engoss you.