Skrydstrup R&D BR1 Bufferooster
The BR1 will give you up to +25dB of boost without changing your tone.
Use it in front of the amp as a switchable gain stage to drive the amp harder, or place it in the efx loop of your amp to achieve i.e. a solo level boost.
The BR1 features a BOOST control which will set the amount of boost added.
With the toggle switch you can select a High Frequency Damping feature. The ratio between the boost level control and the HF damping filter is linear, more boost - more damping.
Unique RFI protection and Silent Switching are standard features.