250W tube power amplifier Amps Switching power supply DC 300V 0.6A / 12.6V 4A / 6.3V 4A AC 220V 110V
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Specifications
- Brand Name
- Hisonauto
- High-concerned chemical
- None
- Maximum Power Per Channel
- Above 200W
- Origin
- Mainland China
- Certification
- NONE
Product Description
Information:
The filament voltage and the 300V voltage adopt independent ground wires, which are isolated from each other and do not interfere with each other
300V uses a delay-on circuit, the filament voltage is first preheated for 30 seconds after power-on, and the 300V voltage is output after a delay of 30 seconds, which effectively reduces the impact on the tube
Mounting hole size: M3
Input voltage：AC110V-AC240V
Output Voltage：DC300V 0.6A
DC12.6V 4A
DC 6.3V 4A
Note：
To prevent the filament voltage and the signal ground wire from interfering with each other, the 300V ground wire and the filament voltage ground wire are isolated from each other, and the ground wire needs to be connected separately!
Package contains：
250W switch power supply * 1
Aluminum shell for heat dissipation, with mounting holes on the shell for easy installation.
8.25mm pitch high-current terminal, directly screw the screw crimping, firm and safe.
Pros & Cons
Pros
- Provides precise voltages: 300V 0.6A, 12.6V 4A, 6.3V 4A for tube amps
- 30-second filament preheat delay protects tubes
- Independent isolated grounds prevent interference
- Supports 250W output from AC 110V/220V
Cons
- No certification like CE, potential safety concerns
- Switching design may introduce noise in audio
- Fixed voltages, not adjustable
- High voltage requires experienced users only
Common Questions
What material and power rating for this 250W tube amp power supply?
Switching power supply providing DC 300V 0.6A / 12.6V 4A / 6.3V 4A.
What voltages and compatibility for tube power amplifier supply?
Independent grounds for 300V (delayed) and filament voltages, AC 220V/110V input.
Is this power supply compatible with 250W tube amps?
Yes, designed for tube amplifiers above 200W per channel.
How to use the tube amp switching power supply safely?
Connect AC input, preheat filaments 30s before 300V output, isolated grounds.
Shipping origin for Hisonauto 250W amp power supply?
Origin Mainland China, no certification listed.
Product information last updated on March 18, 2026