FX-AUDIO TUBE-01J Vacuum Tube Preamplifier + Russian Tube 6J1P

This is the FX-AUDIO vacuum tube preamplifier, TUBE-01J.
I am selling it as I am no longer using it.

It has been confirmed to be in working order.
The original Beijing 6J1 vacuum tubes that came with the unit are no longer in my possession,
so I will include Russian 6J1P tubes instead.

It is in very clean condition with no paint peeling.
The foot cushions are also as they were when purchased.
The toggle switch on the front allows for
gain switching between 0dB and -6dB.

This is the model without tone control.
Would be great for adding some character to your sound.


☆To prevent tampering, returns and refunds will not be accepted.


[Included Accessories]
- 2 x 6J1P vacuum tubes
- Outer box

The instruction manual and cushioning material have been discarded,
so the amplifier unit and the two vacuum tubes will be securely wrapped in bubble wrap for shipping.

※AC adapter is sold separately and is not included.

※As this is a preamplifier, it will not produce sufficient volume when used alone. Please use it in conjunction with a power amplifier.


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The AC adapter should be a DC12V, 1.0A or higher model with the following specifications: **connector size (outer diameter 5.5mm, inner diameter 2.1mm) and polarity (center positive)**. You may be able to find suitable adapters at stores like Hard Off or on flea market sites. If not, please purchase a compatible (used) product separately from the NFJ store.

NFJ (North Flat Japan) products may have different circuit designs depending on the production lot. The lot details for this product are unknown, so we cannot answer any questions regarding them. Please understand.

For detailed specifications, please check the manufacturer's official website.

[Excerpt from NFJ Official Website Description]
This product is a vacuum tube preamplifier (line amplifier) that operates on a single 12V DC power supply from an AC adapter, achieved through a discrete boost circuit.
By connecting it as a preamplifier between playback devices such as CD players and a power amplifier, you can experience sound quality comparable to high-end audio systems with vacuum tube preamplifiers, as the characteristic harmonics of vacuum tubes are added.

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☆Please refrain from negotiating discounts for single item purchases.
☆We offer shipping cost discounts for combined purchases.

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