The Consonance Linear845 is Opera Audio's flagship integrated amplifier and the culmination of nearly 30 years in pursuit of the "human" in music reproduction. The Linear 845 is a single-ended tube integrated amplifier, operating in pure Class A mode to provide uninhibited dynamics, texture and musical flow. A carefully developed driver stage is utilized to maximize the characteristics of the legendary 845 transmitter tube. The amplifier has two pairs of RCA unbalanced inputs as well as two pairs of XLR balanced inputs, to accomodate any line-level audio source. Build specs include the highest quality components and materials. Custom output and power transformers are employed, as well as a sealed EIZZ stepped potentiometer, RA resistors, Auricap XO capacitors, Swedish Lundahl input transformers, and point-to-point wiring to ensure the highest quality signal path. Driver and input tubes are USA-produced, from the golden years of vacuum tube production. Input tube is a 5751, or a 12AX7 can be used for slighly more gain if needed in your system. Listening notes – This thing is a bit wild and decidedly NOT a typical “845 amp”. The drive and sheer musical life it lets loose is a joy. It’s a big amp and sounds that way. Big and untethered. Also beautiful. It exhibits purity like a proper single ended amp while simultaneously laying down chunky, funky bass lines that make you want to dance in your seat. There can’t be many average to higher sensitivity speakers that the 845 wouldn’t bring to life. Specifications:Output power: 28W x 2 (RMS 1kHz)Distortion: 1% (11watt, 1kHz)Frequency: (-3dB) 10Hz - 27kHzSensitivity: 310mVInput Impedance: 100 KΩOutput impedance: 4Ω, 8ΩSignal-to-noise ratio: 90dBConsumption: 300WInput interfaces: 2 pairs RCA, 2 pairs XLRVacuum Tubes: 845 x 2, 5687 x 2, 5751 x 1Dimensions: 19.5" (D) x 18" (W) x 12.4" (H with tube cage installed)Weight: 67lbs (75.3lbs with tube cage installed)
