luvdunhill

why the heck were you wearing a suit to a headphone meet?

Heh, I'll try and clarify. I just cannot see myself owning the 404LE. They don't do anything better than any of the headphones I listed and the cost differential in my opinion is minimal for the huge upgrade (good point Jim, but again, it's a big difference IMHO). I prefer Stax over Sennheiser and I think the SR-007mkI is still the top dog.

really?

I dunno, in my opinion there is still a large chasm between the 404LE and ESP950, HE-60, SR-0, and SR-007 (haven't heard the 4070). Granted, there is a price difference (and reliability difference in some cases), but it's a price-performance ratio that is well worth it.

I figured that switch on the front was the "ortho" switch

man, this must be the most amazing, bestest sounding amplifier evar!

... so, where does the series cap go?

..

cool, that's what I figured. I would have guessed 1uF-2uF until I examined the pics more closely.

as an intellectual exercise, have you given us enough info to guess the size of the parafeed cap? They look rather large.

Reks, can you sharpen burr grinders with Japanese stones

Depending on the goals of this prototyping effort (i.e. Doug's approval), I'd be willing to build a second for a Head-Caser.

those didn't exist then unfortunately.. cardas maggie pins and aftermarket jumpers were the only upgrade available

FWIW, one of the best tweaks I found when I owned Maggies was placing a ficas tree roughly behind them. For example, if they sounded best 4-5' x 3-4' as you mentioned, stick the ficas in the corner.

I did a small restoration on a Suck It ALO original amplifier. Sounds fantastic Also, packed about 50 boxes.

eh?

good question in fact

looking for some beta volunteers?

you'll want a custom curve attenuator most likely. Nothing off the shelf will work. Also, get the gain as low as you can and have the amp still be stable. That being said, I wouldn't do it.

Did you buy this amplifier?

the hell? strange things those are.. looks like a good way to scavenge sockets though

this is the "passive battery" bias circuit

those are some huge fracking caps man!

Doug: I have just done this in fact, and used it to calibrate a LNMP. My source is 1.99 V balanced and 1.99 V single ended.

ouch! I'm assuming you and the carboy survived though?