1. TTVJ Millet Portable Hybrid

    TTVJ Millet Portable Hybrid

    This is a portable amp that uses subminiature tubes inside, designed by Pete Millet. It uses a vacuum tube gain stage followed by a solid state buffer. The tube's draw about 15 milliwatts of power each. The amp is capable of driving about 8 volts RMS into high-impedance headphones.