I would like a reference that has an equivalent circuit of electrostatic headphones (preferably, or of loudspeakers as a second choice) that discusses the negative compliance modeled as negative capacitors and how to pick the values of those negative capacitances based on the physical design of...

Does anyone have a set component values for an equivalent electroacoustic circuit of Stax headphones, preferably 009, but anything would be great. To see what I am talking about look at the document "ELEC-E5650 Electroacoustics, Headphones" at...

Nice thread! 'Just saw it, and have not read through it yet, so please excuse this if it is a stupid question. Has anyone gotten rid of the beautiful Stax leather covers? I have done a few experiments, and I believe I can hear sound reflecting from their sides facing in towards the ears. I...

I purchased some earspeakers that I then damaged from Jack Wu <jack@wooaudio.com>. Woo were helpful in getting me in contact with Arale Leung <arale@edifier-international.com> to get them repaired. Good luck.

That seems like it might be quite important. Does anyone have even a ball-park equation for motion of the charge?

Might there be a difference in mass that could lead to a difference?

Thanks for this post. Can you give more particulars on why in each case? Also, you didn't say it explicitly but do you also grab the 009 over the 009s with the T2?

The amp "gets compressed" when you ask it to put out more that it can. It is not a characteristic of the volume control per se. On the same recording, with a fixed volume setting, compression may happen on loud sections and not on soft ones. Also the recording level matters and the output...

I bought a quad of NOS Mullard XF2s for $800. They were noticeably better than the stock tubes. However I got NOS-6CA7-PH-MB Philips Miniwatt EL34 / 6CA7 Metal Base (4) and prefer them. I have traded the XF2s for other stuff I wanted.

OCD alert. I presume that 3. is the original SR-009, and that the S here is superfluous ?-) Anyway, thanks for this well nuanced review!

Perfect example! Thanks! I need to give the Voce another, better listen.

Could you give us a few words on what you mean by layering? Thx!

Good question. The place in Mt. Kisco really sold me on these cans, funding their attractive display, and Stereo Exchange reaped the benefit. Somehow it seems worse to shop in brick and mortar then buy mail-order, but this is along those lines. I had nothing against Stereo Exchange, per se.

*I* cut my teeth on Koss Pro4A !-) I did some live recording and really needed cans. I do not remember using them for just listening (i.e., when I was not recording). Then in the early 90's I walked into a hifi shop, I believe in Mt Kisco, NY, looking for loudspeakers, and out of curiosity...

Just a reminder: the volume control is a gain control and not a power control. Where you have it set is *not* an indication of how hard you are driving the amplifier, or whether you are clipping it or how close you are to clipping it or how much headroom you have left. The volume control is a...