This is the exclusive Gollihur series of this amplifier and is the result of a special collaboration between Genzler and the guys at Gollihur Music. I've barely used it in the short time I've had it, and it's in excellent condition. Comes with protective cover. You can read about it here: Genzler Gollihur Series Bass Acoustic Array Pro Combo Amp and Extension Speaker (Exclusive) at Gollihur Music - Double Bass, Upright Bass, String Bass Specialists The AA-PRO offers a full featured preamp design with 2 identical channels, both with mic and instrument inputs, a unique Contour circuit, flexible EQ network, Digital Effects, a 150 watt / 300 watt Class D power amplifier platform, unique angled cabinet shape, bottom-mounted speaker stand adaptor and a sophisticated speaker system design. COMBO FEATURES: Two Identical Preamp Channels w/Mic and Instrument Inputs Phantom Power for Condenser Mics Signal Phase Reverse Switch Contour Circuit for Quick Tonal Adjustments (great for dialing in a quick electric bass sound) Active EQ w/Sweepable Mids Adjustable Digital Effects (Reverb and Chorus) on Each Channel Innovative Bass Array™ Speaker System Design 10" Woofer w/4 x 2.5" Cone-driver Line Array Slanted Cabinet Design for Improved Projection Ultra-lightweight 27 lb Compact Cabinet Design Power Output: 150 W (combo); 300 W with Extension Cab 3 XLR Direct Outputs Effects Loop Auxiliary Input Standard Pole mount socket on bottom of cabinet for putting the combo up in the air! I'm located in Charlotte, NC but willing to ship inside the US. Thanks for looking! Message me with any questions!