Thank you for viewing our products.

I'm a Japanese guitar amp engineer.

This is a new power tube JCM800 1987 MOD vacuum tube send return equipped with a master volume of 2204.

This amplifier has been modified to the circuit of the 1987 model so that it operates the same as the 1987 model, and is also equipped with a vacuum tube send return and a master volume (Post Phase Inverter Master Volume), making it the most practical unit. We now have. By placing the master volume at the front and moving the presence to the back, it is relatively easy to operate.

Vacuum tube send/return is a vacuum tube send/return that uses a 12ax7 instead of a normal op amp send/return circuit.

It can be used as a normal send/return, but it can also be used as a [vacuum tube booster] by connecting a patch cable as shown in image 5.

Both send and return are equipped with volume controls, allowing you to create detailed sounds. This is a vacuum tube circuit with really good sound, so please give it a try.

The master volume uses a circuit called [Post Phase Inverter Master Volume], which allows you to increase or decrease the volume from 0% to 100% without reducing the amount of distortion.

At the time of listing, the power tubes were replaced with Electroharmonics EL34 compatible products (new) and the bias was adjusted, creating an overwhelming sound. The front pot has also been replaced with a new one, so it is in excellent condition.

Please check the images for condition and details.

The accessory is a power cable.

I'm using Google Translate.

If you have any questions, please contact us.

thank you.