This is a potent little monster of an amp head – She’s powerful, with tube-like sound from a lightweight Class D amp (there’s 3 preamp tubes inside!). All in all, a lot of bang for your buck! It will be shipped in original box, with the owners manual. Sounds great- a few minor scratches on top from handling (see pics). Blue LED’s in tube window still work too–Price includes shipping (con. US) From the web: FEATURES • 375 Watts @ 8 ohms; 600 Watts @ 4 ohms • SMPS and Class D power amplifier design • Class A Six Stage Tube Preamp (3x12AX7A Tubes) • Modified Passive Baxandall EQ for the Lows and Highs • Active Tube Driven Mid EQ • Selectable 3-Position Mid Frequencies: 220, 600, 2.5K HZ • Input Mute • Hi Gain switch • Master Volume • 3DPM™ Power Management • Full Direct Output Interface • Effects Loop • Headphone Input • Aux. Input • Dual Speakon Outputs • Variable Speed Fan Cooling DESCRIPTION The STM-600 is our 600 watt version of the Streamliner™ design. The 300 volt All Tube Class A preamp design is driven by three 12AX7 preamp tubes utilizing six gain stages. The preamp design features an intuitive and highly effective tone network which is a unique blend of a modified passive Baxandall network for the bass and treble along with an active tube driven mid filter, with selectable mid frequencies. This versatile all tube preamp exudes a fat and rich tone that remains articulate. It can be used to simply add warmth to your natural tone or it can be dialed in to provide a wide range of natural tube overdrive. Along with our preamp design that rivals that of many classic tube amplifiers, the STREAMLINER™ 600 also features our proprietary 3 Dimensional Power Management analog technology. Our 3DPM™ adds heft and girth to each individual note, while enhancing the amplifiers responsiveness and headroom. It provides the dynamic and 3 dimensional tone and feel of an all tube power amp design. Power Output: 375W @ 8 ohms, 600W @ 4 ohms Weight: 6 Lbs Dimensions: 3 1/4" x 10" x 11 7/8" Shipping Included in the 48