or are one of those convinced that valves are able to amplify an audio signal better than transistors.
valves amplify signal by introducing harmonic distortion at even harmonics, tuned with the rest of the music. This returns a very warm sound full-bodied melodic smooth and clean , maybe not everyone agrees with me for the fact that a tube amplifier reaches high costs.
I had the opportunity to test some models of tube amplifiers, audio equipment used in a stereo amplifier DIY low power, with the intention of buying a model at an affordable price with good features and I have chosen for my future 's purchase of an amplifier AUDIO SPACE AS second that uses EL84 valves - 12AX7 - 12AU7 valves, which I have been able to appreciate the operation in the use of Amplifier and still easy to find. ;
The amplifier is sold by freeshop.it at a cost truly affordable in installments.
Input Impedance:> 100Kohm (RCA)
Output Impedance: 4-8 ohm
Output Power: 12W x 2 Class
AB1 P-P (Ultralinear),
16W x 2 Max.
Damping Factor: > 3
Frequency Response:
T.H.D.: < 1% 20Hz-20KHz (Ref. Output)
Total Gain: 30dB
Input Sensitivity: 300mV - 600mV
S/N Ratio: > 89dB (Hum Noise < 3mV)
Channel Balance: /- < 1dB 20Hz-20KHz
Channel Separation: > 60dB (1KHz-3.3KHz)
Tubes: EL-84 x 4, 12AX7 x 1, 12AU7 x 2
Dimension (DxWxH) : (275 x 266 x 160) mm
Weight: N.W. 8,2kg
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