There is a review of the SR-009 online written by Chris Martens:   http://www.avguide.com/review/stax-sr-009-electrostatic-earspeaker-playback-54   It is positive! As far as I know no Hifi-Magazine worldwide has reviewed the SR-009 yet.

Hello, I drive the SR-009 with the SRM-727 since 8 weeks now and I am very happy. Sound isn't bright nor bass shy. With dynamic amps I experienced that an own psu for each channel and two transformers add a lot more space to the soundstage. I wonder if it is possible to have separate power...

I built a "balanced Szekeres" following dsavitsk's corrected "Variation 1" yesterday. Yes, the bottom of the source resistors have to be connected to the negative rail. Actually it is a clone of rjm's "Szekeres VE" without the virtual ground-channel and fed with inverted/non-inverted signal...

Thank you alot for this advice! It's even easier than I expected. Great! Using Mosfets was my intention, too. So, "matching Mosfets" will be a new aspect of the hobby... DC-offset will be an issue since the DAC has 20mV in the CD mode. Zero in SACD mode. The implementation of volume...

Hi group, many DACs (like CS4398, AKM, Sony..) have balanced voltage output. To check how much music really comes out there I connected my balanced HD650 DIRECTLY to the DAC for a moment: guess what...? No noise or any digital artefacts - music almost at full listening level with some SACDs ...

Hi! Just for testing (and for fun) I connected my balanced HD650 directly to the zapfilter's balanced output. WOW! Some questions: 1) What is the best way to add volume control? 2) Are any modifications necessary to make HD650 and zapfilter a perfect match? (changing Impedance, using...

I don't have a balanced amp yet. But I made the following experiences with my dual-mono amp: 1) separate cable to each side of the headphone adds space and resolution. I use 2 XLR plugs and gotham mini-quad for the replacement cables. 2) Using the balanced output of my SCD-player with my...

Hi all! I have an sacd-player with balanced output. I ask myself if a balanced headphone amp makes sense. Can anybody explain, why it sounds better? The studio standard is made for long cables we don't have at home.... When I connected the balanced output to my unbalanced headphone amp I...

Hello! New on this Forum but old problem... I want to build a replacement cable following the "Orpheus-design" from above. Consequent channel separation makes sense. Some questions: 1. Is shielding really necessary? 2. Doesn't the shield work as an EMI-antenna when connected to one side...