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Audio-gd discrete op-amps reviewed: OPA-Earth, OPA-Moon ...
https://www.head-fi.org/threads/audio-gd-discrete-op-amps-reviewed-opa-earth-opa-moon-opa-sun-v-2.397691/
Thanks to my fellow from forum.MP3store.pl (Powered by Invision Power Board) whose personality is known to me and Kingwa, the discrete op-amps designer, I received three types of discrete op-amps from Audio-gd for review. The schematics and descriptions can be seen here: н¨ÍøÒ³ 1 The modules I have tested are: dual OPA-Earth dual OPA-Moon dual …
Audio-GD | Underwood HiFi
https://www.underwoodhifi.com/products/audio-gd
The amps use a Real Balanced ACSS Non Negative Feedback Power supply design with the patent pending Applied "Linear Fidelity" Technology unique to Audio-gd. The amps weight 80 pounds each. Signal to noise is greater than 110dB and gain is 26dB. Input sensitivity is 2.2v for full power thru the XLR inputs.
Audio-gd discrete op-amps reviewed: OPA-Earth, OPA-Moon ...
https://www.head-fi.org/threads/audio-gd-discrete-op-amps-reviewed-opa-earth-opa-moon-opa-sun-v-2.397691/page-10
Originally Posted by majkel /img/forum/go_quote.gif Thanks to my fellow from forum.MP3store.pl (Powered by Invision Power Board) whose personality is known to me and Kingwa, the discrete op-amps designer, I received three types of discrete op-amps from Audio-gd for review. The schematics and descriptions can be seen here: н¨ÍøÒ³ 1 The modules I have …
Do Audio-GD op-amps still perform poorly? : headphones
https://www.reddit.com/r/headphones/comments/5gefny/do_audiogd_opamps_still_perform_poorly/
Audio-GD doesn't use opamps (although they had a discontinued series of gigantic discrete opamp modules, that were a lot like Burson's similarly huge modules; and a single DAC+amp to plug them into called the Compass), but they use an absolutely phenomenal current conveyer amp design that acts as a single monolithic current mode amp design connected directly to the …
Audio-GD • Magna Hifi
https://magnahifi.com/brand/audio-gd/
Amplifiers with integrated DAC. Audio-GD – NFB11.28 Performance Edition – Discrete Single Ended ES9028 PRO DAC – PCM / DxD / DSD – Pre- & Headphone Amplifier. € 369,-. In stock. +. Digital USB Converters (DDC) Audio-GD – DI20 – Digital Interface (USB, SPDIF, I2S – DSD512 PCM384) € 589,-. Rated 5.00 out of 5.
The best sounding audio integrated opamps | diyAudio
https://www.diyaudio.com/community/threads/the-best-sounding-audio-integrated-opamps.154106/
Ah, I wanted to mention that I've also tried a few discrete opamps: OPA-Earth, OPA-Sun and OPA-Sun V2, from Audio-GD. The OPA-Earth was tonally dull and midbass lacking, the OPA-Sun was mechanic in the mids, the OPA-Sun V2 was the best sonically but produced a whopping 375 mV of DC offset where all of the chip opamps produced none.
AUDIO-gd HE-1 STEREO PREAMPLIFIER REVIEW - …
https://hometheaterhifi.com/reviews/amplifier/audio-gd-he-1-stereo-preamplifier-review/
Audio-gd HE-1 Stereo Preamplifier. The fully-regenerative power supply provides ultra-clean power. Fully-balanced circuitry rejects noise. All class-A circuits for reduced crossover distortion. The Audio-gd HE-1 preamplifier makes enough wattage to drive a large power amp. The screen is hard to read from across the room.
Audio-gd's R2R 11 is another 0 R-2R DAC | Darko.Audio
https://darko.audio/2018/06/audio-gds-r2r-11-is-another-350-r-2r-dac/
Audio-gd is no Johnny-come-lately. The Chinese company has been making DACs, headphone amplifiers and two-channel components for well over ten years with the value quotient delivered by their PCM-1704-K DAC designs remaining largely unsurpassed to this day. The catch? For the majority of territories, customers buy blind; direct from the factory.
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