ChromeDomeAudio, LLC

The Blackstar amplifier could all use this treatment.

Stock, they come with low end tubes. And the output transformers do not come close to what they should be.

This HT-40 has had an output transformer upgrade and was loaded with quality JJ/Tesla EL-34's and 12AX7's.

Once the output transformer has been upgraded, you can safely bias the amplifier hotter and get real tone out of it.

This combination is an economical upgrade and delivers outstanding results.

This improvement can be done for 265.00 including return shipping for the chassis only.

Adding an additional 4 ohm output on the chassis is included if needed.

 Take a look at the pictures. And notice the size difference of the original transformer versus the 50 watt Plexi style transformer.