I didn't touch my D1 for 1 year and upon recently powering it back up, the USB does not work. It just says "USB device has malfunctioned" in Windows. Analog inputs work as expected, it's analog. I have another D1 and it worked when I first bought it, but then the USB input stopped outputting...

$3000????   Go for Event or Genlec studio monitors.   Now if you mean $300 LOL, then go for JBL's, Yamaha.   Do a google search for best budget studio monitor... you'll get lists of which to buy.

I disassembled the Yamaha HS7. I figured I would post it up on the interwebs for reference if anyone needs.            

Presonus, Yamaha, JBL... they're all also good for the price. 

The D2 is newer and much better. Many reviews say they're excellent and for the price too.

What's your budget? There are a lot of affordable dacs to recommend.

I agree that there is too much information to go through. However, a simple Google search for "best 5670/2c51/6n3p tube" or something along those lines will give results. That's how I found information fast and efficiently because there are other people out there who has asked the same...

All the questions are answered on the FAQ and INFO page. http://www.head-fi.org/t/470639/maverick-audio-tubemagic-d1-dac-amp-condensed-faq-and-info-thread  

I'm a bass head myself and I'm in a very small room. I used to use a Z680 sub and I thought that was amazing. Once I upgraded to an Infinity Home Theater sub, I felt that the bass was so much cleaner. So I ended up settling with 2 Infinity HT subs in the corner. Bad for untreated room...

5" studio monitors are among the most popular size for home computer setups. Even for passives. Going larger, the user usually has deep pockets or specifically know what they want.

I prefer not to as to be honest kind of lazy to send him a message. I just stuck my OPA627 in the output and input opamp slots and called it a day. :P

So I just upgraded to the D1 PLUS. I opened it up and found 3 OPAMPS. 2x LF353N, and 1x OPA2604. The LF353N is for the headphone out and the both tube/regular output. The OPA2604, seems to be for the input/dac, however if I take the opamp out, the audio still runs, but at a slightly reduced...

Upgraded to the D1 plus after so long.

But then I'll never know how OPA627 truely sound. LOL

I bought 2 of these. Anyone speculate they may be fake? It sounds better over the stock opamps... http://www.ebay.ca/itm/171386346993?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649