This unit is a clone head amplifier based on the circuit diagram of my Aguilar Tone Hammer 350. Main Specifications: Input: 1 x Phone Jack Output: 2 x Speaker Out (Speakon, Phone) 1 x DI Out 1 x Preamp Out Power Amplifier Section: TPA3118 module used, nominal 60W Size: W140 x H60 x D100 Body Color: Black Front and Rear Panels: White with black lettering Prioritizing miniaturization and simplification, tuner out and send/return are not implemented. The power indicator and mute switch LEDs are blue, and the clip indicator is pink. After power input, an isolated DCDC converter is used for the preamp. The power amplifier passes through a noise filter circuit, but there is a possibility that switching noise that cannot be completely removed may be heard. Thank you for your understanding. This amplifier was created with the concept of being small, easy to carry, and compatible with both passive and powered speakers. It can be placed on top of a 4-inch speaker (Photo 12). Please use the preamp out when using powered speakers or inserting into the return of an amplifier. For those who only need one preamp for effects but want enough power to drive small passive speakers, or for those who don't want to use their main amplifier on the road, this might be a good choice as an external sub-unit. Included are a power adapter and a paper with a simple explanation (Photo 2). The Aguilar amplifier, batteries, and speakers in photos 10-12 are for size comparison only and are not included. This is a handmade item by an amateur, so there may be scratches etc. from the manufacturing process. Please refrain from purchasing if you are sensitive to such imperfections. #headamp #ampeg #markbass #darkglass