One of the best sets of amplifiers available. They have the musical magic of the 300B tube (one of the best audio tubes) along with the power and bass definition you don't normally get with 300B amps. They are massive, beautiful, powerful, and amazing. The sound quality is easily better than any solid state design and most tube designs as well. These are statement pieces. They have better transparency than any amp that I have tried here. Its like a veil has been lifted and I can hear everything more clearly. Without any harshness. *Over $6000.00 of tubes included* They now come with a new set of matched Quad Western Electric 300B tubes from 1998 (much better than current WE Tubes - see below). These amps are like new - only used for less than 12 hours total. These are a demo pair with about 12 hours on them. Retail on these top of the line mono blocks is $28,000 without tubes. Once you hear these amps, you will stop looking for the next best thing--you will already have it! These amps are already a legend throughout Asia and England. Factory Matched Quad set of Western Electric 300B’s. *Over $6,000.00 of hard to find Tubes are included* INCLUDES THE FOLLOWING TUBES: 1. WESTERN ELECTRIC MATCHED QUAD 300B These are from1998 - Complete with individual test charts and all associated boxes and docs…as seen in pics. These are the vintage 1998 Western Electric 300B’s. These classic tubes outperform many newer models, offering exceptional quality and reliability. They have less than 12 hours on them (not a typo). 2. RCA 5U4G tubes - SET OF 4 QUAD 3. Philips 6SN7 - set of 4 QUAD MATCHED NOS PHILIPS 6SN7WGTA VACUUM TUBES, BAD BOY BLACK PLATES ***2 AC audiophile power cables also included*** SPECIFICATIONS Model: CA-303 Signature Edition Rated Power Output: 24 Watts RMS Input Sensitivity: 0.72 Volts for full output Input Impedance: 150,000 Ohms Frequency Response: +/- 1 dB from 10 Hz to 65,000 Hz Total Harmonic Distortion: < 0.4% Signal-to-Noise ratio: - 84 dB below 1 Watt Damping Factor: 12.5 Power Consumption: 230 Watts (true RMS) Output Impedance: 4, 8 Ohm Tube Complement (per channel) 2-300B 2-6SN7GTB 2-5U4GB Dimensions (per channel): 11” W x 23.5” D x 9” H Weight (per channel): 48 lbs (48 lbs each) These are perfect in every way. Not a single blemish (no scratches, nicks, dings or anything internal or external). All the corners and sides on every aluminum face plate, rear plate, top plate and chassis are perfect...no dings, scratch, nick, blemish or stories whatsoever. Even the base is perfect. I am very particular and feel for machining imperfections and on top and bottom - there just are none. Very beautiful Pewter blue/gray color anodized. Great for Horn Speakers. OF WORTHY NOTE: This is the same OEM that designed and builds the current $124,999.00 Western Electric Monoblock Amplifiers (not a typo). See: https://www.westernelectric.com/97a-monoblock-amplifiers These Canary Audio amplifiers and preamplifiers use the same components, hardware, wiring, capacitors etc. Even the machine shop and metal stamping, silkscreen as well as the anodizing facilities. The thick aluminum plates and chassis panels, boards are the very same. Best of all it is all made here in the USA. Note: Canary PreAmp and PreAmp power supply not included (see my other listings).