AmpRx Backline 1200W multi amp voltage attenuator - $400 (Kelso)
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Like new. Very little use. Never gigged, always used in home studio.
If you want to get the best possible sound from your tube amp, then you need an AmpRX Backline voltage attenuator. All tube amps (especially vintage tube amps) are designed to run at an optimal voltage, and standard 120V/AC wall current is typically too high for vintage tube amps, as well as some modern designs. With its proprietary 10-amp transformer and flexible attenuation options, the Backline brings that current down to an optimal level for significantly improved performance. The rackmountable Backline accommodates two tube amplifiers, making it ideal for musicians who run a pair of heads in a live-in rack case. It's also great for bass players who need lots of overhead for their power-consuming rigs.