Tesla AZS 100 L, 1979, made in Czechoslovakia [Germanium transistor]

Link radiomuseum
Country:  Czechoslovakia
Manufacturer / Brand:  Tesla; Praha, Bratislava etc.
Brand Supraphon
Year: 1980
Type: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) Semiconductors present.
Principle Audio-Amplification
Wave bands - without
Power type and voltage Alternating Current supply (AC) / 120; 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 16 W (unknown quality)
from Radiomuseum.org Model: AZS100L - Tesla; Praha, Bratislava etc.
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 390 x 85 x 300 mm / 15.4 x 3.3 x 11.8 inch
Notes Stereoverstärker mit 2× 8 Watt Musikleistung; 3 Eingänge.
Net weight (2.2 lb = 1 kg) 4 kg / 8 lb 13 oz (8.811 lb)
Price in first year of sale 1,590.00 CZK

Service Manual: elektrotanya

Let me introduce this stereo amplifier, which unfortunately falls into the class Hi-Fi. It is the product of Tesla, Tesla with model numbers AZS 100 L Stereo. The amplifier is made with us in 1979 and for this brief moment, these beautiful pieces produced truly blessed!
Its price is around 1675, - crowns - depended on the version. Older model had a front panel silver brushed aluminum. The newer model has been a black front panel, I personally felt like the black, but it is only a matter of opinion. The amplifier also belonged cable that had at both ends DIN5 - "male" and the clutch also DIN5 but the "female". This amplifier will surely could take its design, as it was in dark wood finish. At that time it was quite affordable and at that price and total quality and visually very interesting.
Now let's move to the technical side Tesla AZS100L Stereo.
The amplifier had a stereo with traditional repro-connectors with power 4W per channel and 4Ohm. The Tesla AZS 100 L was able to connect via DIN5 "pětikolíku" following devices:
Magentofon - universal input and output for the tape recorder or sound reproduction from tape.

Gramophone - but only with a piezoelectric crystal if you want to insert. Magneto offered to a newer model AZS 101 Stereo.
Tuner - he would call and AUX because it connect almost anything (CD, Tuner, PC, MP3, etc.)
This amplifier has been equipped with a classic equalizer for treble, bass, and pan
Of course, volume. AZS 100 L also had a quadraphonic output of the amplifier. Headphone was placed at the rear, the front was only for newer models. In this amplifier uses transistors GD608 and GD618. The operating voltage is 24V. Voltage is filtered out high-quality capacitors 4700mF.

AZS 100L While not offering Hifi quality, but rather because of the complexity of the circuit had kvaliitní sound. At that time was very high among the devices that did not have the quality Hi-Fi.
I personally have this amplifier at one time used by your PC, and I was satisfied with it. Now I also have an old amplifier and Transiwatt TW120. Tesla AZS 100 L of me made a nice impression, both visually and sonically;-)

Stereo amplifier 2x8W, basic functions and controls - volume, treble, bass and balance, push-button switch three inputs, switch the speakers for listening to headphones (headphone jack located on the rear panel of the amplifier), mono-stereo switch. Wooden box with a metal front panel.

A simple amplifier of his time. Germanium transistor output stages.

AZS100L not 2x8W, 2x4W but even on the current network of 230 because it has a stabilizing power output stages.
2x8W 4ohm to get it if just trade GD607 / 617 for AD161 / 162, pick excitation GCčko with as much beta, Uceo least 30V and then you can gently lift the potentiometer output voltage stabilizer 25V.
Then AZS100L provides up to 10W into 4 ohm sinus without danger of overloading ends. GDčka have had only Ic 2A, while ADCK 4A.