A low-noise buffer in a small, rugged housing, the CAE Buffer can add up to +6dB of gain with the front-facing gain slider; it makes up for signal loss that can occur when combining effects with different impedance levels; it finetunes signal recovery with Hi and Lo cut switches; it has an extra output for a tuner, separate effects chain or amp, and can be set to receive either a buffered or unbuffered signal; it also features a convenient 9VDC power output jack which provides power for another pedal. MXR Custom Audio Electronics, Buffer. Low-noise buffer in a small, rugged housing. Makes up for signal loss that can occur when combining effects. Fine-tunes signal recovery with Hi and Lo cut switches. Features extra output for optional separate unbuffered signal chain. Power: Dunlop ECB-03E AC adapter.