For this 2019 Edition of the Master 3, Audio-GD has updated to Class A amplifier to allow it to offer ever better audio measurements. The manufacturer has integrated Linear Fidelity technologies into the output circuits and Non-Negative Feedback. This particular design allows the amplifier to obtain a linear response curve as well as a very low distortion level. This allows for a sound reproduction of a very high transparency regardless of the output level.

• Real Balanced ACSS Non Negative Feedback Power Amp
• Supports XLR and ACSS inputs
• Applied "Linear Fidelity" Technology
• Soft Start Power Design
• 250W @ 8ohm
• 500W @ 4ohm
• 1000W @ 2ohm
• Class A up to 10W at 8 Ohm / Class AB from 10 to 250W at 8 Ohm
• Over 80 lbs

Product Page - http://www.audio-gd.com/Master/Master-32019/Master-32019EN.htm
Reviews -https://www.hifi-advice.com/blog/review/digital-reviews/spdif-dac-reviews/audio-gd-part1/2/

Current version sells for $3799 from Underwood Hifi
https://www.underwoodhifi.com/products/audio-gd

Very rare to see one of these come up for sale. I’ve owned this amp for 3 years and upgraded to the Master 2A from Audio-GD. I have the original shipping box so it will be safely packaged up.

Buyer is responsible for shipping.