This is a late production LSA Standard that I bought from a dealer on US Audio Mart. It was a trade-in. It is in excellent condition both electrically and cosmetically. There are no blemishes cosmetically and it sounds wonderful. It was sold to me with new Electo Harmonix 6922's which I have replaced with 1975 vintage Reflektor plant Russian military 6922's. These are said to be one of the best 6922 tubes ever produced, I agree !! It also has an excellent MM phono stage. It also comes with a heavy all aluminum remote control which controls source, volume and on/off/standby. I have the original owners manual, the two sets of tubes, power cord and very heavy double box and packing material that amp was shipped to me in. The amp is supported by Underwood Hifi which has retained the services of an LSA Tech to perform all repairs and upgrades. The tech is located in Washington state. If you contact Underwood they will give you the techs info.  Specs: Finish: Silver & Black, Rated Power (8Ω): Greater than 150wpc, 4ohms, 300wpc , 2ohms, 600wpc and 800wpc into 1.3ohms. Total Harmonic Distortion: Less than 0.1% (1KHz) Recommended Loading Impedance: 4-8Ω Frequency Response: 20Hz-32KHz (±1dB) Signal-to-Noise Ratio: Greater than 90dB Channel Separation: Greater than 60 dB (1KHz) Input Impedance: 47KΩ Input Sensitivity, Analog: Greater than 500mv Input Sensitivity, Phono: Greater than 4mv Inputs: 1 balanced, 3 single-end, 1 phono Pre-out: Dimensions: 17" (W ) x 9 1/4 " (H) x 19 1/2" (D) Weight: 78 pounds.