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 ...

Most tube enthusiasts will instantly recognize ... It would be interesting to subject it as a headphone amplifier to a series of audio tests to evaluate the effect of a mains transformer over ...

I decided to design and build an headphone amplifier. I wanted it to be small, cheap but with excellent quality at the same time. The outcome of this hobby project was a hybrid amplifier, with pre-amp ...

This would be another intriguing project. The Bravo range of small Class A single tube headphone amplifiers/preamplifiers consists of the Ocean, B1, V2, and V3 models. China is well-known for ...

Astell & Kern CA1000T headphone amplifier: was £2,299 now £999 at ... It combines solid state and tube amplification enabling you to choose between the two modes or mix them together.

The HiFiMAN SERENADE Wireless DAC/Headphone Amplifier offers lossless streaming over Wi-Fi for $200 less than its predecessor. From Dr. Fang Bian, President and CEO, HIFIMAN Electronics: “The addition ...

This high-end headphone amp usually comes with a reassuringly high ... It combines solid state and tube amplification enabling you to choose between the two modes or mix them together.

HIFIMAN EF400 Desktop Balanced Headphone R2R DAC Amplifier In India on sale, ZEN DAC by iFi audio Super affordable DAC amp from iFi audio on sale, Mini Valve Tube Headphone Amplifier Best Stereo HiFi ...

FiiO has announced the BTR17, a new portable headphone amplifier built around Qualcomm’s new flagship QCC5181 Bluetooth chip, which not only complies with the Bluetooth LE Audio standard and has ...