The K1525 is the largest most powerfull Amp it features a 15" speaker with 1 tweeter and 1 horn & crossovers. The cabinet is lighter and smaller than most other brands. The 3 channel Pre-Amp includes the following Features. Channel. 1 includes 1 XLR microphone input & 1 1/4" input for instruments or HI Z mics, also Volume Bass Treble & Reverb controls. Note: Both inputs may be used at the same time. Channel 2 Has a combo jack 1/4" Hi/Lo gain switch , lo cut filter switch and Volume Bass Mid Treble and reverb Controls. Channel 3 includes 1 1/4" Instr. level For HiZ Mics and Keyboards. Also included 2 RCA jacks Line Level for any device with line such as, MP3 Players - -CD Players - TapeDecks - Submixers. Ch3 Has Volume Bass Treble & reverb controls. There is an Insert jack to accomidate Effects procesors (Insert is between the pre-amp and the power amp) . The pre-amp also has a Master Volume control The power section is 125 watts RMS to the internal speakers. Other Features: A 10 ft. detatchable power cord, External fuse holder holds spare fuse. Speaker ON/OFF switch , stereo headphone jack (mono signal), 1/4" line out jack and a reverb ft switch jack. The Cabinet is covered in a Heavy-Duty Black SRO Carpet with metal corners, a reinforced strap handle and a black nylon grille cloth. Cabinet is also available in black or brown vinyl just add and a "V" to the model # when ordering. K1525V Size 23x19x14" Weight 50lbs.