ait

Responses from ait

Tube Watts vs. Solid State Watts - Any credence?
How does a large power transformer affect high frequencies?Output transformer, maybe... 
burr-brown vs. sabre vs. ?
Implementation is everything. I had a BB PCM1704 based DAC then built a tube-output Sabre (Buffalo IIISE based) that blows the BB away in every way. Power supply and output stage count at least as much as the DAC chip. 
Preamps without built in DAC silly question
In case you're curious, a pic of my preamp/DAC. It uses balloon 26 DHT output tubes; the four tubes in front are voltage regulator tubes.Max26 Preamp/DAC. 
Preamps without built in DAC silly question
I built a DAC into my tube preamp and it's the best sounding combo I've heard. Very short signal path this way, one less set of ICs, and the preamp output tube also functions as the DAC output stage. Switching is set up with high quality relays so... 
Custom Bridge Rectifier on a preamp power supply
Use a choke input supply instead of cap input and eliminate the huge current peaks that occur in cap input supplies. The input choke very effectively smooths the current draw from the rectifiers. That plus Schottky diodes (amps) or tube diodes (pr... 
Short speaker cable recommendation
With speaker cable that short you're better off sound-wise removing the speaker binding posts and running the wire directly to the crossover. Not a big inconvenience to move/ship the speaker with only 12" of wire hanging off it, and you eliminate ... 
Which BNC-BNC coaxial
I use a $22.00 True 75ohm 1 meter coax cable from Digikey. Sounds fabulous. It's digital. 
Digital coaxial audio cable suggestions.
Best results for me came when I stopped messing around with RCA connections, which are woefully ill-suited for transmitting digital audio data as they are almost never a true 75ohms, and replaced my RCA digital jacks with true 75ohm BNC on both en... 
Why does my tube amp
Great point, Ralph. Also, using a Speltz Zero autoformer can make a low impedance speaker look like a higher impedance. I'm loving the Zeros on my Infinity RSIIbs. No downside that I can hear at all, in fact the entire frequency range from low bas... 
How to clean inside Amps and PreAmps
I know of a guy who cleans old tube amps by removing the tubes, placing them in a dishwasher and running them through a cycle! He then lets them air dry, puts the tubes back in and applies power.I'm not making this up, nor am I recommending it for... 
Total cost of ownership - how to reduce it
Learn how to build your own gear and you can have it all. The finest sound, upgrades whenever you want them, a system that is tailored exactly to your preferences, and repairs at zero labor cost. The biggest misconception in this hobby is that thi... 
Toroidal Isolation Power Conditioner
End, indeed. The facts speak for themselves. 
Increase total Speaker Impedance Question
You can get them for less than half that price without the box (naked). In any case, glad to hear you found a solution. 
Increase total Speaker Impedance Question
Look up Speltz Zero Autoformer. It's like a gearbox for your system, allowing you to step down the amp output impedance (or step up the speaker input impedance, depending on your viewpoint) without wasting all that power as heat. 
Toroidal Isolation Power Conditioner
Another data point to consider:http://www.audialonline.com/online-topics/psu-transformers-ei-vs-toroidal-and-more/Note the graph showing the bandwidths of the various transformers tested and the discussion that follows.