Tesla Music 70 AZK450 mono tube amplifier, 1972-1975, made in Czechoslovakia

Link: radiomuseum

Country: Czechoslovakia
Manufacturer / Brand: Tesla; Praha, Bratislava etc.
Brand Supraphon
Year: 1972–1975
Category: Audio Amplifier or -mixer
Valves / Tubes 5: EF86 ECC85 EL34 EL34 EM84
Semiconductors (the count is only for transistors) 10:
Main 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 50 W (unknown quality)
Model: Music 70 AZK450 - Tesla; Praha, Bratislava etc.
Shape Tablemodel with Push Buttons.
  • Leistungsverstärker Mono Sinus 50 Watt, Musikleistung 70 Watt.
  • Vorstufen mit Transistoren. Eingänge: 3× Mikro, 2× Gitarre, TB, Radio, und Echo.
  • Übertragungsbereich: 40-16000 Hz. 
Mentioned in Ceskoslovenske Rozhlasove a Televizni Prijimace a Nizkofrekvencni Zesilovace (Band IV S 362 -365)

Weston SKD-4000 [modular], 1990, made in Taiwan

Superscope R-1220 AM/FM Stereo Receiver by Marantz, 1976-1977, made in USA

Link: hifiengine

Tuning range: FM, MW
Power output: 10 watts per channel into 8Ω (stereo)
Frequency response: 15Hz to 50kHz
Total harmonic distortion: 1%
Damping factor: 30
Input sensitivity: 2.8mV (MM), 130mV (line)
Speaker load impedance: 8Ω (minimum)
Dimensions: 430 x 122 x 287mm
Weight: 7.3kg
Year: 1976

service data

Related Catalogues

TOM 1501 Soviet Analog String Synthesizer | ТОМ 1501 электронный музыкальный инструмент, 1985, made in USSR

Link: ruskeys


Tula's factory of musical instruments "Melodiya". Tom - 1501 is an EMI, that has an orchestral effect. This portable instrument is intended for solo playing musical compositions of any genre. It is also can be successfully used in ensembles. Tom - 1501 is a one-manual keyboard instrument that can play the following soundings: piano, clavesin, orchestrall ensemble, viola, contrabass and wind instruments.

The instrument consists of the following sections:
  • assigning generator
  • 12 manipulators
  • generator of infralow frequency
  • delay line
  • brass filter
  • block of filters
  • output amp
  • power block
  • volume pedal
  • sustain pedal
The only thing that forms all the tones is the main generator. That's why a possibility of instrument's detuning in the process of operation is eliminated. The basis of timbres formation of the instrument is a synthesis of 6 registers on the left side of the keyboard and 5 registers on the right one. Tom - 1501 gives one a possibility to change sounding during playing the composition using such special effects as vibrato, sustain, chorus.

Designer - Gennadiy Terekhov

Number of keyboards 1
Total volume of keyboard 5 1/12 octave
Total audible range 6 1/12 octave
Volume of bass section 2 octave
Number of registers 7
The generator has a frequency stability of max 0,3%
Accuracy of pitch 0,035%
Frequency modulation of the basic tone max +/- 3%
Tones pitch retuning of the instrument +/- 6%
Rated outlet voltage in a load on outputs, V
- mono 0,3
- stereo 0,2
- piano 0,2
headphone (in a load 8 Om) 0,3
Level background/noise in a pause max 55 dB
power consumption max 15 W
Mains voltage (50Hz) 220+10 V
dimensions 920х360х195 mm
weight (upright not included) max 13 kg

Musima 1655 H [double deck /double sandwich], 1960-1970, made in GDR (Germnay)

Link: cheesyguitars

Semihollow electric guitar made in DDR in the 60's - 70's. H in the name stands for Halbresonanz which is "semihollow" in German.

The specifications are taken from 1973 Musima catalogue:

Top and bottom - laminated maple, deliberately arched. Neck - rosewood. Binding - top and bottom, white; white binding on F-holes. Nickel hardware. Two pickups with adjustable magnetic screws; Switch: rhythm, solo, banjo and Shearing effect. Master effects control and Rhythm control.

Model 1655H is a no-vibrato version of 1655HV.

Jolana Diamant LP 6-string electric guitar, made in Czechoslovakia

Link: cheesyguitars

There were a couple of different modifications of Diamant. We'll mention just a few of them.
Brand: Jolana, made in Horovice, Czechoslovakia
Pickups: two HB. There were at least two types of them: soapbars with closed pole pieces (shown) and opened - with no covers. Sometimes there's a "Spectrum" logo on them.
Controls: two volume, two tone, 3-way switch. A rare modification used a chickenhead switch instead of the regular Gibson-style one. Knobs were usually transparent, sort of LP custom design.
Hardware: chrome
Neck: bolt-on (yes!), 22 frets, trapezoid inlay.
Binding: body (both face and back), neck. The binding is made with a sort of creme - white plastic, although its color is still not creamy enough to match Gibson.
Bridge: tune-o-matic/stop bar. Tune-o-matic is somehow modified and features a 3D adjustment option for each string. Stop-bar is bigger than a standard LP.
Tuners: Jolana standard. It is used on almost all the Jolana guitars - oval heads and oval back covers.
Materials: maple neck, unidentified body woods
Finishes: black, red, sunburst (rare).
A couple of "modifications" : pickguard is screwed to the body, and the lower strap button can be screwed out and it reveals a screwdriver. wow.

Unitra Eltra Rytm 16 automat perkusyjny (serial # 4293), 1990, made in Polska Rzeczpospolita Ludowa

  • The rhythm box has 16 preset patterns with variation: Afro, Swing, Samba, Boogie, Cha-Cha, SlowRock, Rumba, Disco 1/2/3/4/5, Beguine, BossaNova, Tango, Walc..
  • 2 control sliders : VOLUME and TEMPO.
  • Power on/off switch.
  • Two buttons switch variation type : A+B, A or B.
  • Start/Stop is possible only with external pedal. Original pedal is not included with this lot!!! Two pedal controls : start/stop and drum fill activation.
  • Power Supply: 220/240V.
  • sealed up (under factory seal)
  • On a rear panel is located 2 sockets : one for pedal, one for Audio Out Jack 6,3 mm. Output is on 5-Din connector.
  • serial # 4293

ESKO-100 Vintage Tape Echo/Delay/Fuzz/Vibrato Soviet Multi-Effects Processor by Formanta (serial #0285004), 1970x, made in USSR

Link: ruskeys

This is not a simple tape delay unit - there are two independent sections with separate input/output with more additional analog effects.

serial #0285004

4 delay times is fixed with buttons - You can use for any from 4 delay times simultaneous.

On the right side of unit is two line inputs: MICROPHONE 1 and 2 and one Mono output - For this section You can use tape delay only.

On the left side is two other inputs: GUITAR Input - for this input You can apply tape delay, fuzz (additional SHIMITTER FX for fuzz - more harmonics and O. - octave down), tremolo and filter, controlled with external pedal. External pedal is not included.

For ORGAN input - You can use tape delay and shmitter.

Right section - mic-in 1-2 levels, reverb level, echo level, power on

Left section - guitar-in level, organ-in level, pedal on/off, reverb level, echo level

Middle section - vibrato depth, vibrato freq, fuzz on, shmitter, octaver, vibrato on, 4 variations knobs (filter).

Reverberator uses the circular tape. You can switch the motor on/off, so the tape is preserved. Power supply 220V/240V.

Weight approx. 8kg !!! (10 kg with package).