I've got a Woo Audio WA3-based custom made preamp, and the other day I noticed that there was a bit of a transformer hum coming from the unit. I discovered the hum by accident... I bent down to pick something up by my equipment rack, and my while I was bent over my head was really close to the...

I got my new 10' Sennheiser Cardas replacement cable today and I've been listening to music through it. I've only got about 8 hours on the cable and I realize that it isn't anywhere near burned in yet, but I'm concerned about the glare/harshness that I'm hearing in the mids with this cable that...

Some of us Woo 3 owners have been using 6BZ7/6BQ7's in place of the stock NOS Philips 6922 input tubes, and some of us have been getting a low level hum/buzz in our amps when using the 6BZ7's. I e-mailed Woo Audio about the buzz, and they wrote back and said they could mod my amp so it wouldn't...

I've been waiting for awhile for my new MPX3 to arrive, and it turns out that UPS had tried to deliver the amp to my house on Friday when I wasn't home, but the delivery attempt ticket fell off of my door and got lost. So now my amp is sitting in the UPS warehouse and I can't get at it until...

I don't know if the Senn 600/650 family of phones have the the foam pads in them covering the speakers that my 580's do, but after a few days of listening to my brand new pair of 580's, I took a closer look at them and noticed there are some fairly thick foam pads covering the speakers. I got to...

I just bought my first set of good headphones (HD 580's) and I need an inexpensive tube amplifier to go with them. I've narrowed it down to the MAD Ear+ or the MG Head OTL - does anyone care to weigh in on which is the better amp? Or should I spend a few extra bucks for the Single Power PPX3?