-50%

VPS1 Tube Mic Power Supply Kit For Discount

Original price was: $219.00.Current price is: $109.50.
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Estimated Delivery:
15 - 22 Mar, 2025
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Description

The VPS1 kit lets you build a premium power supply for your tube microphone.

Unlike most tube mic power supplies on the market, ours does not use diodes to set the output voltage. Diodes add noise, and allow the output voltage to drift. The voltage drift causes nonlinear behavior from the mic s vacuum tube, which in turn affects the sound of the mic.

The VPS1 power supply was designed by Scott Hampton of Hamptone.com.

2022 Upgrades

We revised the VPS kit in 2022 to improve noise filtering. Filter capacitors on the B+ circuit, both input and output, have been upgraded to our custom formulation low-ESR electrolytics. Filter capacitors on the F+ circuit were also upgraded. The build guide was rewritten and improved.

2023 PCB Options

We now stock two PCB variants. The L shaped board is the one we ve been selling for years; it fits the Alctron chassis, where the power transformer is mounted to the lower part of the chassis, and the PCB fits around the transformer.

New for 2023 is a rectangular PCB, which fits Shanghai power supplies (e.g. Avantone) where the power transformer is mounted on the PCB.

(Both PCBs could be used with either power supply, with minor adaptations. Using the L PCB in a Shanghai PSU requires that two mounting holes (for the transformer) be drilled in the chassis. Using the rectangular PCB in an Alctron PSU requires that the transformer be unmounted from the chassis and reinstalled on the PCB.)

If you are ordering the VPS Circuit Kit in conjunction with a V-47, 12-251, or V-251 tube mic kit, choose the Rectangular PCB option, as that one is compatible with the PSU chassis we ship in the tube microphone kits.

Kit Options

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