Compare clock board with on-board low noise regulator bare board one piece ! $4.59 Add to Cart Quick view
Compare Discrete dual opamp Earth bare PCB JFET input /output high biasing current ! $6.99 Add to Cart Quick view
Compare Tube crossover board circuit based on Marantz model 3 + daughter boards $34.49 Add to Cart Quick view
Quick view clock board with on-board low noise regulator bare board one piece ! This is a clock bare PCB. The board includes a low noise series regulator circuit for the TCXO ( or OCXO) and the wave shaping logic circuit. The board can output the original clock frequency , clock frequency/2 and clock frequency/4 simultaneously... $4.59 Add to Cart Compare
Quick view Discrete dual opamp Earth bare PCB JFET input /output high biasing current ! This is the PCBs of two discrete opamp Earth to be assembled for DIP-8 package. The design features : 1. JFET input ; 2. JFET output ; 3. high operating current ( 60mA@ +/-15Vdc ) The finished opamp can be used to replace standard single opamp... $6.99 Add to Cart Compare
Quick view High current +24VDC regulator board Hi-Cap Naim PCB 2 pieces ! On list is two pieces of high current DC regulator boards, using LM317K ( TO-3 package of LM317), or LM338K. Naim used two pieces of such regulator in their famous linear power supply hicap 1C. The values printed on the board allows a steady +24V... $7.99 Add to Cart Compare
Quick view Power Follower( PF2019) new version w/tube driver board ! This is the bare PCBs of two channels of class A MOSFET SE power amplifier, named as "power follower" by the designer, audio expert Mr. Andrea Ciuffoli. This is the newest version 2019 and an authorized PCB version by the designer. For the... $22.49 Add to Cart Compare
Quick view Tube crossover board circuit based on Marantz model 3 + daughter boards This is the bare PCB of a tube crossover board , circuit based on legendary Marantz model 3. The circuit is a 6dB/oct 2-way crossover design, using three 12AX7 ( or three 12AY7, or 1 12AU7 and 2 12AX7). 6dB/oct gives a most natural roll off and musical... $34.49 Add to Cart Compare