Here are the specs for the new model:
* Mid selector switches for a choice of four different pre-set mid frequencies, from low-mid to high-mid (located in back panel for easy access).
* Pre-set gain control to boost gain by one to three times (located in back panel for easy access).
* 18V drive is for more headroom, which allows incoming signals to pass through cleanly, without clipping the high-end or low-end frequencies.(Requires two 9V batteries)
Xotic Bass Preamp:Three Band EQ (high, mid, low) boost & cut. Center position produces flat, unaltered sound, with no added tonal coloration.
Xotic Bass Preamp Frequency Specification
HIGH: @10kHz, +14dB, -12dB
MID1 (Mid select switches: sw1-off, sw2-off): @3kHz, +9dB, -9dB
MID2 (Mid select switches: sw1-on, sw2-off): @1kHz, +12dB, -10dB
MID3 (Mid select switches: sw1-off, sw2-on): @800Hz, +4dB, -4dB
MID4 (Mid select switches: sw1-on, sw2-on): @400Hz, +8dB, -10dB
LOW: @20Hz, +10dB, -10dB
For more information: