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Emmeline SR-71 Headphone Amp - Ray Samuels Audio
http://www.raysamuelsaudio.com/products/sr-71.html
The SR-71 has one of the most advanced yet simple and thought of design, in both layout and component. The amp has the best lane separation and shortest signal paths. Built on FR4 material with Military Specs PC Board Oxygen free Copper. …
Ray Samuels Audio SR-71B Fully-Balanced Portable …
https://www.theabsolutesound.com/articles/ray-samuels-audio-sr-71b-fully-balanced-portable-headphone-amp-playback-60
The SR-71B was the first portable amplifier in the world to offer fully balanced circuitry. Circuit implemented via extremely high quality balanced output op amps, supported by premium quality resistors, capacitors, etc. The amp features an ALPS volume control. Switch selectable single-ended and balanced stereo inputs.
Ray Samuels Audio Emmeline SR-71 portable headphone ...
https://www.stereophile.com/headphones/905ray/index.html
The Emmeline SR-71 portable headphone amplifier ($395) is small but not light. Housed in an extruded-aluminum chassis with a bolt-on faceplate and a rear panel and battery cover that attaches with a thumb-screw, it measures 3.5" by 2.5" by 1.5" and weighs 11oz.
Emmeline "The Black Bird" SR-71A ... - Ray Samuels Audio
http://www.raysamuelsaudio.com/products/sr-71a.html
Emmeline "The Black Bird" SR-71A Portable Headphone Amp We are proud to announce the arrival of the newest edition to the RaySamuelsAudio line, the SR-71A! We sold the last SR-71 about nine months ago. Unfortunately, parts became unavailable for that period of time. There was still a great demand for the SR-71 but we couldn’t do anything about it.
REVIEW: Ray Samuels Audio SR-71B balanced portable ...
https://www.head-fi.org/threads/review-ray-samuels-audio-sr-71b-balanced-portable-headphone-amp.529311/
And now there is the SR-71B, a relatively small but massively powerful balanced portable amp. The mere existence of this product was unthinkable a couple short years ago. I’m glad there are people like Ray Samuels and Jan Meier around to push the performance envelope!
News - Ray Samuels Audio
http://www.raysamuelsaudio.com/
There is no headphone ever made that SR-71B can’t drive with great authority & control. It will stand toe to toe with best balanced home amps out there. It can swing in balanced mode more than 26V p-p. SR-71B uses, custom designed for RSA, four Lithium Ion battery pack that when fully charged you have 16.8 volts DC.
REVIEW: Ray Samuels Audio SR-71B balanced portable ...
https://www.head-fi.org/threads/review-ray-samuels-audio-sr-71b-balanced-portable-headphone-amp.529311/page-12
I recall Ray saying something about the SR-71b is a quad mono amp, and Intruder uses fewer chips and is a dual stereo amp. For what I use the amp for, Ray thought staying with the SR-71b was a better choice. I mostly use it as a desktop amp with full size balanced headphones, with a desktop DAC.
REVIEW: Ray Samuels Audio SR-71B balanced portable ...
https://www.head-fi.org/threads/review-ray-samuels-audio-sr-71b-balanced-portable-headphone-amp.529311/page-15
The biggest complaint about the Duet and Mini-DAC headphone out were the somewhat 2D soundstage when driving headphones, which was not as deep and immersive as the mini-DAC XLR outputs into a nicer amp. I think the SR-71b and F-35 (or P-51) are a better amp, but by how much I can't say since I haven't heard a Duet in years.
REVIEW: Ray Samuels Audio SR-71B balanced portable ...
https://www.head-fi.org/threads/review-ray-samuels-audio-sr-71b-balanced-portable-headphone-amp.529311/page-13
I got the distinct impression that Ray thought the SR-71B (amp section) was a little more advanced than the Intruder (amp section). well my thought process is that the sr-71b is $650.00 and the intruder is $700.00 i would say logic would tell you one of 2 things, the dac section is a 50.00...
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