Topping L50 Headphone Amplifier (Black) NoLongerAvailable G-key and volume controls are

G-key and volume controls are located on the top of the right speaker

Operating Temperature-10˚C – 55˚C (14°F – 131°F)

Suitable for any 21 loop plastic comb binding machine

with its wit

Topping L50 Headphone Amplifier (Black) NoLongerAvailable G-key and volume controls areNew NFCA circuit Redesigned new NFCA circuit based on the same working principle as the one in A30 Pro. It provides 2x the power at 300 Ohm compared to L30. The new circuit shares the same 0. 3uV ultra low noise and 145dB dynamic range as well as 0. 00006% THD+N. Sound quality is never a problem With the help of NFCA, L50 easily reaches the top of the industry, and it has almost perfect performance regardless of distortion, dynamic range, and multi