Learn how and when to remove this template message Three rack-mounted audio power amplifiers used in a sound reinforcement system. Key design parameters for audio power amplifiers are frequency response , gain , noise , and distortion. These are interdependent; increasing gain often leads to undesirable increases in noise and distortion. While negative feedback actually reduces the gain, it also reduces distortion. Most audio amplifiers are linear amplifiers operating in class AB. Until the s, most amplifiers were tube amplifiers which used vacuum tubes.
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This article shows the SAL; however there were various versions made for different countries. Back then, the Technics Corporation manufactured a whole range of amplifiers in the SA series that had similar cosmetic look and the use of slider controls. In the very earlier models, the tuner had conventional manual tuning knob with scale, however, back then digital quartz synthesizer technology was new and, they incorporated that into the SA, SA, and SA In order to memorise the preset stations, many models had a small battery box at the back, which held "AA" sized batteries.
Review Audiophile snobs usually stick their noses up when they see an amplifier with slider controls. However, that is their loss, because this is a great sounding amplifier with a straight analogue design, Baxandall bass and treble, and Sanyo thick-film hybrid technology for the power amplifier.
This IC is getting rare, and was one of the nicest sounding, making this vintage amplifier very valuable. If you have a Technics record player, then this is the amplifier to connect it to make a great sounding set. Providing you use a good set of Technics linear-phase speakers, you should get that creamy bass and high definition treble that people like. The digital tuner with a fluorescent display makes an interesting combination, and I just love those old blue displays, which are very bright and look good in a rack system.
Consequently, a faulty amplifier that needs a new IC is going to be an expensive fix. Over time, the value of this amplifier should increase and a unit in mint condition can sell for well over one hundred pounds. This Article Continues
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