PrimaLuna ProLogue 2 Integrated amp with KT120 tubes

PrimaLuna Prologue 2 integrated amplifier. Excellent operational condition. The cosmetic condition is very good although there are some very minor rub marks. This is one of my favorite amps I have owned. Fantastic sounding and very versatile due to the Autobias system which allows you to change tubes by simply plugging them in. This amp comes with a matched quad of Tung-Sol KT120 power tubes and a matched pair of Psvane 12AX7 gain tubes giving the amp 42 wpc.
Original triple boxing for shipping. Tube cage included however please note that the original cage does not fit over KT120 tubes, and the amp must be run w/o as in the photos. Any other power tubes listed below will fit inside the cage.
I am selling it because after enjoying it for several years I eventually purchased a PrimaLuna Dialogue Premium. From a smoke free, and child free home. Thanks for looking.
From the manufacturer’s website (Primaluna-usa.com):
• Upgraded Solen capacitors made in France. The result is an even better midband and wonderful clarity.
• Fast Recovery Diodes. Resulting in increased definition and detail, especially when the music becomes complex.
• Soft-start circuit Extends component and tube life by powering up gently every time you turn it on.
• Tube plate fuse Protects the amplifier output stage. Other amps may need a trip to the shop if a tube fails. Not this one. Just plug in a new tube and fuse, and go.
• Adaptive AutoBias. Exclusive to PrimaLuna, this circuit monitors and adjusts bias automatically. Each power tube is monitored to stay in a peak operating range. Improved performance and better sound, with distortion reduced by 40 to 50 percent over conventional designs. No need for matched tubes. No bias adjustments. Ever. It also allows you to experiment with different power tubes. Plug in virtually any power tube. Adaptive AutoBias will automatically adjust itself! In addition to KT88s, you can use 6550, KT90, EL-34, KT77, 6CA7, 6L6GC, KT66, 7581, EL37, and any of their equivalents.
• Custom designed output transformers Encapsulated low hum, wide bandwidth for great bass and extended highs. Designed by Marcel Croese and one of the most prestigious transformer designers in the USA.
• Premium parts. Fully vented chassis, chassis-mounted ceramic tube sockets, Alps potentiometer, Nichicon and Solen capacitors. WBT style speaker terminals. Gold plated input jacks.
• Hand made with the finest point to point wiring, with workmanship equal to or better than any product you can buy at any price, period.
• Chassis made of finely finished heavy gauge steel, and five step automotive quality finish. Each coat hand rubbed and polished. Removable tube cage included no charge.
• Toroidal power transformer for low hum, and a front end that is dead quiet.
• Conservative design parameters: Though PrimaLuna amplifiers are powerful, tubes run well below their maximum ratings.

PrimaLuna runs their output tubes at a minimum dissipation without going into crossover distortion. When you look at our amps, they provide less power from each tube. With KT-120’s as an example, a PrimaLuna will give you only 21 watts per tube. So running a pair of them you get 42 watts. That’s a lot of power, but the demands per tube are a fraction of some manufacturers that give you 100 watts from a pair of KT-120’s. It’s a cheap way to get big power, and it’s cheap. In fact, free. To get more power the right way is expensive. It requires bigger transformers, sockets, wiring, resistors, capacitors, and the tubes to do it. Which is exactly what PrimaLuna did. But we didn’t stop there.
Read this carefully: Power has nothing to do with sound quality. Or bass slam. You can buy a 200 watt receiver for $299, and it will even have surround sound. Do you think for a minute it will sound better than a 50 or 100 watts high end amp costing $10,000? Of course not. Only first-time buyers think that way. Experienced audiophiles know that for the majority of listening sessions, you use maybe 10 watts of power.

Specifications
Output: 40 watts x 2 (with stock KT88 tubes)

Freq. Response: 20Hz-30kHz +/- .5dB

THD: Less than 1 percent at full power

S/N Ratio: 89 db

Input Sensitivity: 300mV

Power Consumption: 300 watts