TopHeadroom Blockhead Balanced Dual Mono Headphone Amplifier
This is the upgrade version of the Headroom Blockhead balanced Dual Mono Headphone Amplifier. They sold for $3,333 USD in the early 2,000s plus an extra $555 USD for the stepped Attenuator Upgrade ($3,888 USD) or over $5k Australian. https://www.audiogon.com/listings/solid-state-headroom-blockhead-balanced-headphone-amp-2012-02-03-amplifiers-94043 This one had four fried amps when it came to me. I removed the current amplifier chips and the 6 surface mount transistors and replaced them with di