At $1,999, the Technics HA-507 is a pure analog headphone amplifier and preamplifier with a balanced/dual mono configuration. Borrowing design concepts from TEAC’s top-of-the-line 700 Series, the ...

(Mars is a four-voice synth with mono, duo and polyphonic modes.) The oscillators run through a second-order voltage-controlled tube filter with self-oscillation and overload, so you'll be able to ...

One big change is the addition of two JAN6418 vacuum tubes, with the M8T featuring both a tube amp and a transistor-based headphone amplifier. Tube amps are often sought-after for their ‘natural ...

Designed to be both compact and flexible, the AP-507 offers a trio of listening modes: stereo, Bi-AMP and BLT mono, all delivered at 170 watts, which really is a lot for something so small.