Topping A90 Discrete Balanced Headphone Amplifier & Pre-Amplifier (Discontinued) rtly-do-not-recommend Output power (at +30 dBu

Output power (at +30 dBu @ 1 kHz)

M12 will reduce the output level and accurately match their impedance

"The Sundara is possibly the best bang for the buck headphone available right now

with ultra low noise and distortion

Topping A90 Discrete Balanced Headphone Amplifier & Pre-Amplifier (Discontinued) rtly-do-not-recommend Output power (at +30 dBuThe Topping A90 Discrete Balanced Headphone Amplifier (A90D) is a direct upgrade over it's predecessor, the Topping A90. Featuring a number of quality of life improvements including a R2R volume relay, a remote control, a ground loop noise terminator switch, a 12V trigger interface, a redesigned UI, volume memorization, and more, the A90D is better in every way. As its name suggests, the A90D uses fully discrete components in a complete redesign of