Post by
mikegtr06 »
https://forums.nicoclub.com/mikegtr06-u94074.html
Sat May 10, 2008 5:24 pm
bose is overrated.
everyone needs a good set of electrostatic headphones
The Stax SRS-727 system combines two new products: the SR-007 Mk II electrostatic headphones and the SRM-727 Mk II electrostatic amplifier. Both can be purchased separately. The SR-007 Mk II is the third iteration of the Stax "Omega" earspeakers. The original Omega I debuted back in 1993. Stax released the Omega II in 1998 with the designation SR-007. With the SR-007 Mk II, the update brings improved reliability, wiring and changes to appearance. The specs for the SR-007 and SR-007 Mk II are identical otherwise.
The SR-007 Mk II has the same open-back transducer as its predecessor, featuring gold-plated electrodes without any holes in the outer ring to increase the drive force over the diaphragm. The result is greater linearity and dynamic range, deeper bass and finer detail. The transducer is housed in a thick resin and metal enclosure to dampen unwanted vibrations. The SR-007 Mk II has upgraded the connection between the transducer and headphone cord for higher transmission capability and reliability. Also new are the comfy sheep-skin ear cushions and leather-covered headband. Available in black or silver. Comes with padded carry case.
The SRM-727 Mk II electrostatic amplifier is an update to the SRM-717 amplifier, which was released back in 2000. Despite the "Mk II" designation, there never was a SRM-727 Mk I. The SRM-727 Mk II is a class A, DC-coupled solid state amp with a dual FET front end for gain (2 gain stages total) and a high voltage emitter follower back end. It has 2 electrostatic headphone sockets. The main difference with the 717 is that the output stage has been redesigned and no longer uses negative feedback. Stax claims that the new output stage has more dynamic range and an extended frequency response out to 115kHz.
There are some other subtle changes to the amp's specs. The overall gain is now 54dB (60dB in the 717) and the rated input level for a 100V output is 200mV (100mV in the 717). The high frequency distortion figure has also changed. It's now 0.01% for a 100Vrms output (in the 717, it was 0.01% for a 300Vrms output). Available in black or silver.
SR-007 Mk II Specs: 170K ohms, 100dB/100Vrms sensitivity, 580VDC bias.SRM-727 Mk II Specs: 450Vrms max. output, 580VDC x 2 bias.
Price: $4,085 US for the SRS-727 system, $2,410 for the SR-007 Mk II and $1,940 for the SRM-727.
hahahahahahah ok no i do like the bose they are good. but i love my altec lansing headphones.