Nemphasis Silver Box Booster - was £149

“This one goes to 20!” The Silver Box Booster is the natural extension of the guitar’s volume knob.
The Silver Box Booster offers up to 22 dB of clean boost, a natural overdrive that retains all of your playing nuances and delivers a highly musical EQ.  Additionally it keeps your guitar’s tonal colour unaltered.
From clean and bright sounds to highly dynamic crunch tones and from robust full-spectrum sounds to tones that cut through the mix, Silver Box provides an “in your face” sound full of character and presence.
This is the perfect multi-tool for the professional musician.
Technical Details:

• Scrupulously researched and selected electronic components.
• True bypass.
• Full analogue.
• Jack input/output 6.3 mm or 1/4″ each side.
• Four controls allow adjustment of gain, tone (bass and treble) and volume. LED indicates the effect is on.
• No click /pop from foot switch.
• Power supply required 9 volts DC from external power supply unit via centre negative 2.1mm plug or 9V battery. Battery access via four screws on the base of the unit.
• Power consumption 10 mA (max).
• Dimensions (mm): 72 X 120 X 55
• Weight (g): 250 (without battery).