Hello, I am just swapping my pre-main-amp combo for a vintage almost-TOTL Onkyo A-8650 integrated amplifier. The former NAD preamplifier has a headphone out impedance of 120 ohms, driving not only my Sennheiser HD580 (300 ohms), but even my portable close-back Sennheiser PX360 (32 ohms) and a...

Hello, usually I enjoy music with an old Stax SR-X MkII electrostatic headphone powered by the SRD-X pro (normal and pro bias), a small amp getting his signal from the rec out of a NAD preamplifier. Intending an improvement for small money and looking on the second hand market I could at about...

Hello, being a Vinyl Enthusiast I prefer older amps with well sounding phono Inputs. Currently I own and enjoy an Arcam Delta 60 with 2x55W form the late 1980ies. My Sennheiser HD580 sounds very well out of the Arcam´s phones jack. But the AKG K500 sounds thin and bloodless. I know, like...

Hello, I just saw on Ebay a headphone amp named "Mountain Systems HX-2". It seems interesting to me, because it features 3 line inputs, a "passive" and an "active" RCA output and therefore could give a complete preamplifier. Does anyone knom this brand/manufacturer? Thanks in advance!