The BluGuitar FATCAB is the result of many years of trying to capture the sound-character of an old 4x 12" box in a compact 1x 12" format. Obviously physics set limits, but this cabinet will surprise you. It proves its worth on small to mid-sized stages, where its advantages really come to light. Because the box only has one speaker it quickly reaches its optimum working range, making the sound vibrant and less stiff. The Thiele Bass-Reflex-System and the interlocked, extremely stiffened casing provide a defined, dynamic Bass sound with Sub-bass, usually only associated with 4x 12" boxes. This is still the case even when playing at a lower volume. The volume of the casing delivers an extra portion of low-midrange frequency. At high volume the box delivers a balanced sound, without any danger of droning or loosing the tight bottom due to the fat magnet of our custom designed speaker. The speaker itself gives the sound a harmonious mid-range and soft treble, which are made even silkier by being filtered through the thick basket-weave covering the front of the box. A big chunky bass with a quick response, a creamy mid-range and a soft silky treble on top, which stays smooth and doesn't get annoying. For me, the FATCAB sounds and feels like an old Mini 4x 12" box. In clubs and on medium-sized stages, I don't miss having a 4x 12" box at all