Check the listing for details. Millett Hybrid MAX/MOSFET-MAX V1.2 PCB. Condition: New. Listed at 25.00 USD. http://www.diyforums.org/MAX http://www.diyforums.org/MOSFET-MAX This is the PCB used to build the famous Millett Hybrid MAX or MOSFET-MAX! PCB specs:6.3 inches wide x 6.2 inches (160mm wide x 157mm)2 oz copper on an 0.062 inch (1.6mm_ FR4 dielectric This PCB has been thoroughly tested and vetted for many years, with successful builds throughout the DIY headphone community. The design incorporates a fabulous set of features:Onboard linear-regulated power supply (fed from walwart) resulting in less than 45 uVAC of noise!Fully heat sinked Diamond Buffer outputHeadphone protecting power-on delay relayOnboard mounting for a GrubDAC or SkeletonDAC with relay-switching inputsFacility for tube LED lightingTerminal block inputs/outputs for all connectionsFits a standard Hammond Mfg 1455T1601 caseAs with all Beezar Audio products, complete, in-depth Bill-Of-Material, construction details, and tweaks are available at DIYforums.org.