All circuits and circuit boards offered on this page are peer reviewed and have been optimized for signal integrity and circuit performance. In addition, all audio circuits have been extensively tested by listening tests.
I ship from Washington State, USA using USPS First Class Mail. The shipping rate is based on weight, hence, will vary depending on the number of boards ordered. The shipping rate shown during the Paypal check-out is the actual rate charged. Shipping to the USA starts at $5.00; Canada: $9.00; and the rest of the World: $12.00.
I typically ship within 1~2 business days. The transit time is generally on the order of 2~5 days for US shipments and about 2~3 weeks for international destinations.
I accept all major credit cards via Paypal checkout. You don’t need an account with Paypal to make a purchase.
| PCB ID | Description | Price each | QTY in stock | |
|---|---|---|---|---|
| MaidaReg_1P0 | 21st Century Maida Regulator Rev. 1.0 | $25 | > 20 | |
| MaidaReg_1P0_STW | 21st Century Maida Regulator Rev. 1.0 PCB + STW12NK95Z | $35 | 10 | |
| FILREG_3P2 | Universal Filament Regulator Rev. 3.2 | $20 | > 20 | |
| FILREG_3P2_MODULE | Universal Filament Regulator Rev. 3.2 Module | $120 | 2 | |
| FILREG_3P2_CUSTOM | Universal Filament Regulator Rev. 3.2 Module – Custom Voltage, Current | $175 | ||
| 300B_Driver_R1p0 | 6N6P/ECC99/12BH7A 300B Driver Board, Rev. 1.0 | $40 | > 10 | |
| 300B_PSU_R2p0 | 300B Power Supply Board, Rev. 2.0 | $40 | > 10 | |
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