Output impedance 32-600 ohms. Input impedance 50k. Freq. range 15-70k Tube complement, 12AU7 as input/gain Two 5687 as drivers. 2 inputs switchable. Regulated DC power supply for both the filement & the plate. External power supply connected via 600 volts shielded cable. Dimensions... The amp, front plate, left to right, 5.5
Cardas Audio Headphone Cable (20 FT)
The Cardas Headphone cable was developed specifically for Sennheiser HD-650, HD-600 and HD-580 headphones. It is a shielded, lightweight, flexible, 4 conductor, design. It has a Cardas, 1/4 inch stereo phono plug and custom molded headphone plugs which eliminate four soldered connections found in other replacement cables.
Two types of wiring configurations are available, the standard 1/4
Sennheiser HD-650
General Description: The audiophile HD 650 is the ultimate in open, dynamic headphone design. Developed from the award-winning HD 600, the HD 650s feature improved materials for even better sound reproduction. They captivate the listener with their expressiveness and emotion while maintaining absolute precision and lifelike reproduction. Enjoy sound in perfection! Features: * Systems with narrow tolerances (± 1 dB), hand-picked in pairs * Highly optimised magnet systems for minimum harmonic and intermodulation distortion * High-quality titanium/silver finish * Specially developed acoustic silk for precise, uniform attenuation over the entire area * Extremely lightweight aluminium voice coils ensure excellent transient response
Ray Samuels is awsome, I have an SR71 and love it to death with my Grado RS-1's. Have you thought about moving over to Grado? Your system is way killer, the cardas upgrade must really warm up the already great bass you get with your Senns. If you havent found them already, theres a great HP site at "headfi.com". Lots of "headfi'ers" there that have all kinds of "stuff" to trade or for sale. Oh, the company aint to bad either! lol.
My next upgrade will be a PS Audio Power Port. I have two dedicated 20A lines running into my office, and I'll run one to each of the two outlets in the duplex.
Then, I want to get ahold of three 1.0m PS Audio xStream Plus power cords.
At some point, I might upgrade the interconnect to the Cardas 0.5m Golden Reference, but not for quite a while.
Nice system...I just met Ray this past weekend...great guy. He let me listen to the HR-2...what a fantastic SS amp for HP's. It doesn't loose much to his new Raptor either! Enjoy.
