AKAI PS-200 (1979) - Stereo Pre-Power Amplifier

Brand: AKAI

Model: PS-200C | PS-200M

Year: 1979

The PS-200C preamplifier is characterized by the following properties: The entire signal path is designed using DC differential amplifier technology. The same applies to the phono amplifier, which makes it possible to connect a moving coil pickup system (3-phono inputs). For optimal adaptation to all commercially available pickups, the input impedance of the phono amplifier can be switched between 33, 47 and 100 kOhm. Together with the existing ground terminals, this results in an excellent performance with hum-free phono reproduction. The 250 W/channel professional PS-200M power amplifier, like the PS-200C preamplifier, is designed using DC differential technology. Twin power transformers supply power for this dual mono construction model. Two large power (watt/dB) indicators together with a 9-step peak-power LED display provides information about the power output. There are also electrical protection circuits for overloads, speaker defects or cable short circuits to protect the expensive output transistors. A subsonic filter prevents low-frequency interference caused by record treble or rumble.

AKAI PS-200M

Continuous power: 2X230W (8ohm, DIN)

Total Harmonic Distortion: <0.008%

Frequency Response: DC-100kHz 

Signal to noise: 115dB

Dimensions (WxHxD): 440x200x430 mm

Weight: 29 kg

PS-200C

Dimensions (WxHxD): 440x90x457 mm

Weight: 7.5 kg

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ReVox B21 (1994) - 3-head cassette deck

Brand: ReVox

Model: B21

Year: 1994 

The B21 was the last component to be added to the Emotion series from ReVox. While this model still uses a 3-head configuration dual capstan mechanism, this time this assembly was not built by ReVox, instead it comes from ALPS-Japan. Also the Auto Align calibration only performs BIAS adjustment. A clean, uncolored and low-noise sound can be obtained by using two-layer Type II cassettes. 

Technical Data:

Head: 3-Head 

Motors: 2 motor Dual Capstan

AUTO ALIGN calibration computer

Dolby B-C, HX-Pro

Factory settings are made for: 

TDK AR-X, BASF Chrome Super II, TDK MA-X

Frequency Response: 30-18.000Hz (Normal)

    30-20.000Hz (Chrome)

    30-20.000Hz (Metal)

Wow and Flutter: 0,1% (JIS, playback)

Dimensions (WxHxD): 440x127x367mm

Weight: 8,5kg

Original sale price: 2000 DM - Germany

Available in silver and black.

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Discover More Classic Cassette Deck

SANYO VZ-CS50 (1989) - S-VHS Hi-Fi Stereo

 

Brand: SANYO

Model: VZ-CS50

Year: 1989

In order to unleash the full potential of S-VHS, it is necessary to develop technology specifically for S-VHS, rather than taking-it as an extension of conventional VHS technology. Based on this idea, Sanyo focused on the chassis structure, which affects image and sound quality. A mid-mount system has been adopted. By locating the core mechanism in the center of the body, the influence of external vibrations is minimized, and at the same time, vibrations generated by the mechanism itself are distributed almost equally to the insulators at each corner and absorbed. By fundamentally improving the system design, was possible to achieve a high level of stability in tape running, which determines image and sound quality at the most fundamental level. Also Brass impedance rollers are installed on both the inlet and outlet sides of the cylinder, which are particularly effective in reducing screen distortion and color shift caused by unstable tape running. The large diameter impedance roller of 18mm on the inlet side reduces the low-frequency jitter component that mainly appears as large vertical line undulations, while the small diameter impedance roller of 10mm on the exit side reduces the small flickering undulations around 1kHz. The adopted S-VHS system offers high image quality aided by Digital noise reduction, digital tracking. For an audio dynamic range of 90 dB the Stereo Hi-Fi system was adopted. There is even more, the VZ-CS50 also features built-in satellite receiver, jog-shuttle control, "picture creative" color and sharpness control, title generator, flying erase head, insert dubbing, digital multiscreen. Stereo audio is also transmitted from the VZ-CS50 to the remote control where you can connect your headphones.