“Before listening to this charming little amp, I was very skeptical about overall tube amp idea. But this amp changed my mind greatly. First of all, I have to admit it's design and build quality - it's really great, amp looking very stylish. As for sound, I have to mention, that it's really giving "warmth" to sound. This is hardly explainable by words, but old rock, for example, starts...” --cleg
“I purchased this tube amp on eBay for 75 dollars in new condition. This is my first tube amp of any kind. The only other headphone amplifier I have owned is the Fiio E5. First of all, I will state the entire listening set up I have that I use with this in order to provide a more solid frame of reference for the review: My turntable is an Audio-Technica LP-120 turntable with...” --professorwiki
“ I got this small amp from a local marketplace. It sounds OK when I got it, too warm, almost no treble. After I got the schematic and tips from google I did some mods with this baby and now it sings! What I did: 1. Cut some traces for crosstalk improvement 2. Make better grounding, measure voltage difference between in and out, make sure its not more than 1mV 3. Change the...” --Jazzyfi
Powerful, synamic and sweet TUBE sound With Electro Harmonix 6922 TUBE Cute and Beautiful looking Pure Class A Tube amp, No op amp IC Low voltage, good safety Powerful for any Headphone Technical Specification: In Put Power DC24V Input Sensitivity 100mV Input Impedance 100KOhm Out-Put Impedance 20~600 Ohm Gain 30dB Frequency response 10Hz-60KHz +/-...