Headphone Amplifiers by YAMAMOTO SOUND CRAFT Yamamoto Sound Craft's HA-02 has quickly gained a reputation for being among the most refined and natural-sounding headphone amplifiers available at any price. Designed around the Western Electric 408A - an outstanding vacuum tube that was originally used in high-frequency signal applications - this single-stage, no-negative feedback headphone amplifier wears its Yamamoto pedigree on its sleeve. As in Yamamoto's breathtaking SET power amplifiers, premium parts are used throughout, including custom transformers with Teflon-insulated windings and Yamamoto's own highly-regarded tube sockets. The chassis is sculpted from resin-infused Japanese cherry, and solid African ebony legs are used for resonance control. And yes, the HA-02 sounds every bit as good as it looks! Every HA-02 is shipped with a NOS pair of Western Electric 408A tubes and an Audio-Technica iPod adaptor cable. HA-02 Tube Headphone Amplifier ($995) Output: 300 mW Frequency response: 30 Hz - 21 kHz Gain: 9.5 dB Output impedance: 50 Ohm Tubes: 408A x2 Venus Hi-Fi. East Lansing, Michigan. 517-881-7753. info@venushifi.com. Website design and maintenance by Sketchwork.