The Model 7A Super Sustain Match Box is a line buffer/driver that offers an adjustable gain of 0 dB to 15.5 dB with ultra low distortion (.03% THD) and signal to noise characteristics. The 7A's easily accessible full range tone control allows you do dial in just the right eq. The Matchbox 7A clips to the leg of your steel guitar for convenience access and tone tweaking during performance. The 7A's battery life is rated up to one year based on five hours per day use, six days per week when using the convenient battery switch which disconnects the battery without disconnecting your instrument cables.
$120 and I will pay the postage.