Boa noite, pessoal! Seguinte: vendi meu amplificador Pioneer SA 3000 e me arrependi ao trocar por um AV Receiver Technics SA-SX 950 para atuar tanto em filmes como para estéreo...na verdade o gargalo ficou no estéreo, pois para filmes o receiver é repleto de funções e recursos e como segundo set na sala de estar atende perfeitamente...mas para estéreo não ficou legal. Senti após ligá-lo que faltou a pegada do grave do Pioneer e os agudos mais abertos e cristalinos...foi o que notei...mas decidi não me desfazer dele. Então vasculhando achei este amplificador da Technics SU-V40 mas achei apenas alguns dados técnicos na Net e queria saber se alguém já o ouviu em ação. Seguem os dados do amp: TECHNICS SU-V40 The Integrated Amplifier which carries a classAA technology. In classAA, it has VC-4 amplifier composition which arranged two kinds of amplifier, the voltage control amplifier of the pure Class-A operation without the influence of switching distortion and crossover distortion, and the electric-current drive amplifier for driving a speaker dynamically, on L/R of each. Thereby, voltage control amplifier was released from a heavy burden called a current supply source, and could control the voltage to an input signal faithfully, and electric-current drive amplifier supplied the electric current required for a speaker drive, and has eliminated it from ill effects, such as an impedance variation of a speaker. A large-sized transformer and a mass capacitor equipped with 300A thing instantaneous current supply capacity and the outstanding linearity are adopted as a power-source part. Moreover, by the original concentrated power block, the output stage and the power-source part were unified with the skillful stream composition, the ill effect of electromagnetic field was cut off from the origin, and the distortion of a high region by electromagnetic radiation is also canceled. Six input terminals are carried and the selected source can be checked with an indicator. It is possible to connect with a volume direct, without carrying compact-disk direct functionality and passing an input selector. The large-sized metals insulator is adopted and the ill effect by an extraneous vibration is reduced MAIS INFORMAÇÕES: Technics SU-V40 stereo integrated amplifier Mid 80s model with slimline profile Rated at 50W RMS New class AA amplifier circuit Operating manual [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]New Class A :[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]refers to the amplifier type - [/FONT][FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]Class A[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]amplifiers have their transistors always turned on during each half cycle of the music waveform. It means they are power hungry and require a big heavy power transformer and large smoothing capacitors. The upside is no crossover distortion and a high quality sound[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]Class AB [/FONT][FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]amplifiers are the standard - they switch off one half of the transistors when not needed and then turn them on again as the music waveform requires. This is efficient, so that you get a lot of power for low cost, but the downside is more distortion as the transistors turn on / off and on again[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]New Class A[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]is the Technics amplifier circuit design where transistors are left on a small amount always - still cheap to make but with much less crossover distortion and a lot of power for less weight and expense This is why you see [/FONT][FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]New Class A[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]amps still going strong after 25 or 30 years - owners get a good quality sound and ample power - and so you don't have to turn the volume up too much to attain average listening levels. They punch above their weight and last and last.[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif]Features :[/FONT] [FONT=Tahoma, Arial, Helvetica, Verdana, sans-serif] -:®:- 1986, 1987 model dark grey colour -:®:- Power rating : 50W RMS at 8 ohms -:®:- Frequency response : 20Hz - 20kHz at rated power -:®:- Total Harmonic distortion THD : < 0.003% -:®:- Phono signal / noise [A-weighted, at 5mV] : 76dB sensitivity 0.25mV -:®:- Maximum phono input : 160mV -:®:- High level sensitivity : 0.15V -:®:- Dimensions [ W x H x D ]: 430 x 125 x 374mm Weight : 6.3kg[/FONT] VAle a pena? Abraços, valeu!