There are plenty of tube amplifiers now being manufactured, with a popular choice being headphone amplifiers that use a tube as a gain stage followed by an op-amp as a buffer with a low impedance ...
[Easily handles low or high impedance headphone]: For a total power output of up to 1.5 W under a 32Ω load, and up to 20Vpp at 300Ω, K5Pro ESS desktop amplifier can easily handles any low or ...
The fairly conventional circuit of the tube amplifier ... high impedance output from the tube into a low impedance suitable for driving a headphone or speaker. The HT voltage is a relatively ...
The power amplifier gain can be switched between 3 positions (Low/Mid/High) to fine-tune the output to best match the sensitivity and impedance of the headphones. Preamplifier: In addition to ...
The R7 is FiiO’s first-ever desktop hi-res audio player/streamer and balanced DAC/amplifier ... more than enough to power low-and high-impedance headphones. The R7 will be available with ...