preamp

The Mi-Si rechargeable battery-free preamps sold by AMT include an AC charging adapter, which can be plugged into an AC outlet and connected to the preamp's output jack for 60 seconds to fully recharge its on-board SuperCap power supply -- providing up to 16 hours of playing time before needing to recharge.

Now available only from AMT is a rechargeable batteryfree Mi-Si preamp that's been specially modified to obtain improved sound from Fishman's passive Nashville bridge insert reso pickup.  This unique charge amplifier preamp design substantially reduces the pickup's non-linear distortion and provides an active, buffered output which minimizes effects of cable capacitance while also providing better signal level matching between the pickup and Aura pedal.

AMT announces June 2010 availability of an innovative new internally-mounted acoustic instrument preamp featuring 4-band EQ, volume and phase adjustable via a wireless remote control.  Although intended primarily for use with AMT's Aura-compatible "Single Element" reso pickup, this preamp can also be adapted for use with most other acoustic instrument pickups... including Fishman's popular Nashville-series reso bridge insert pickup.  In addition to remote control, it also features a rechargeable, battery-free power source and custom piezo linearization for reduced distortion and improved sound quality from piezoelectric pickups.

For resos having either an AMT "Single Element" or Fishman "Nashville" piezoelectric bridge insert pickup installed, AMT is now offering a state-of-the-art 'batteryless' piezo pickup buffering/linearizing preamp in either internally-mounted or external plug-in configurations, with the option of including a volume control and/or volume, treble and bass controls.  The unique charge amplifier-based design of these preamps results in far less hysterisis distortion in the pickup's output signal [commonly referred to as 'quack'] for substantially improved sound quality.