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1 Year Local Warranty (subjected to Audio-GD T&C, additional repair guarantee provided.)

Audio-GD R-27RE All-In-One Full Discrete R2R Ladder Balanced Desktop DAC Headphone Amp + Preamp + Regenerative PSU

* Note *
The R-27RE sound is ultra revealing, if connected with the low-grade source or play the low-quality music like the MP3 format that you only can hear the low-quality sound.

> Unique Jitter Elimination Technology
> Unique Real Non-Feedback ACSS Headphone Amplifier / Preamplifier Technology
> Unique Fully Analog Regenerative Power Technology
> Unique I/V Conversion Volume Control Technology

What's different between R-27RE and R-27HE:
Both built in the regenerate power supply to get the cleanest power supply. The regenerate power supply not only for provides the cleanest power, but through audition and tweak boost the sound quality most neutral, more transparency and analog.
The R-27HE has larger size and more heavy chassis, more complex regenerate power supply design, and larger power output (15W at 25 ohm) cause the price is more expensive.
For reduce the cost, the R-27 RE has apply the smaller and more light chassis, redesign the regenerate power supply board that maximum keep the sound quality but less cost, and the power output even less (10W at 25 ohm) but still strong enough for most headphones.
So, the best for price is the R-27RE. The best for utter performance, the R-27HE is.