The 6J2 is wired as a triode, and because a common-cathode circuit is designed to drive a high impedance, it’s safe to assume this won’t be a very good headphone amplifier. It’s a simple ...

The amplifier in this case is based upon the CMoy, a common headphone amp design ... create her own horizontal and vertical deflection circuits. Horizontal scan is created by a 555 timer ...

Next, I measure each amp’s output impedance, a resistance added as a primitive way to protect against short circuits and big jumps in volume when you swap headphones. Headphone amps with high ...

The TEAC AP-507 joins this premium series that aims to deliver high-quality performance from compact products that are ...

With access to 100,00 tones and cable-free playing, the firm is aiming to take headphone amp technology to new heights ...

A headphone amplifier could be the difference between a good headphone performance and a great one. You can of course plug wired headphones into a laptop or phone, a portable hi-res player (better) or ...

Then there is the Full Score One headphone amplifier we have on test here ... The initials stand for True Transient Technology, and it is a proprietary circuit that claims to improve the Full Score ...

The device – considered to be a forerunner to today's multi-effects pedals – revolutionized guitar recording, and can be heard on thousands of hits ...