From the Owner's Manual: "Acoustic's Model 470 is a versatile guitar amplifier with many special features including a dual channel preamplifier. Model 470 produces 170 watts RMS power into a 4 ohm speaker with less than 5% distortion. The LEAD/BASS Switch located on the front panel is unique in that it allows the amplifier to be used as either a lead guitar or a bass guitar amplifier. Besides having a quality sound and a powerful sound system, Model 470 excels in flexibility due to its advanced engineering.”Also pictured 1970's Acoustic Control Corporation Model 270 Lead / Bass Guitar Amplifier $500If you know, you know. This is an absolute beast of an amplifier, with a sound reminiscent of the old Sunn amps. It is equally suitable for bass or guitar. Rated at 375 watts at 2 ohms.It can be used for guitar, bass, keyboards, synths and drum machines. Condition is good but will pots will need to be cleaned. Famously used by Rush, The Isley Brothers, and Mahavishnu Orchestra, among others!1970's Acoustic Control Corporation 204 Speaker $250 4x12 guitar and bass cabinet with original Eminence 12" speakers installed. Slight wear on tolex. Big bottom end, often compared to vintage Ampeg 8x10s. One input at 4Ω and can handle approxmiately 200-225 watts RMS.