Nikko Solid State Stereo Amplifier TRM-40 LA (TRM-40 B) [Germanium Transistors HITACHI 2SB337 ТО3], 1968, made in Japan

Link: radiomuseum | Nikko TRM-40B [Service Manual, PDF] | Nikko TRM-40 IC ldsound

Оконечный усилитель собран на германиевых транзисторах: 4 x HITACHI 2SB337 ТО3

Country: Japan
Manufacturer / Brand: Nikko Electric Manufacturing Co., Ltd.; Tokyo
Year: 1968 ??
Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Audio-Amplification
Wave bands - without
Details
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 44 W (max.)
Model: Solid State Stereo Amplifier TRM-40 LA / TRM-40 B - Nikko Electric Manufacturing
Material Metal case
Dimensions (WHD) 300 x 95 x 220 mm / 11.8 x 3.7 x 8.7 inch
Notes
- Nikko TRM-40 LA / TRM-40 B
- Nikko presented the first TRM-40 as early as April 1963; the model described here is referred to as TRM-40 B in the service instructions and dates from the later 1960s. Full transistor stereo amplifier, germanium transistors, output transformer, channel-wise separate tone control, connections for phono magnetic (2.7 mV) or ceramic (160 mV), tuner, tape, AUX (170mV) and two special audio head inputs: 19cm and 9.5 cm (1.8 mV each). Circuit breakers for mains and output stage protection
- Output power at distortion level 1.0%: 14 watt continuous power at 8 Ω (measured individual channel) 44 watts of total music power into 8 Ω (both channels)
- Output stage transistors 4 x Hitachi 2SB361
- Metallgehäuse: schwarz, Frontblende: schwarz/silberfarben
Net weight (2.2 lb = 1 kg) 4.8 kg / 10 lb 9.2 oz (10.573 lb)
Mentioned in -- Original-techn. papers. (Serviceanleitung)

Nikko STA-8080 Am-FM-Multiplex Stereo Receiver, 1975, made in Japan

Link: radiomuseum | elektrotanya

Оконечник собран на: NEC 2SD188 & NEC 2SA627 попарно в каждом канале.
Country:  Japan
Manufacturer / Brand:  Nikko Electric Manufacturing Co., Ltd.; Tokyo
Year: 1975 ?

Category: Broadcast Receiver - or past WW2 Tuner
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Super-Heterodyne (Super in general)
Wave bands Broadcast (BC) and FM or UHF.
Details 
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 160 W (unknown quality)
Model: STA-8080 - Nikko Electric Manufacturing
Material Wooden case
Shape Book-shelf unit.
Dimensions (WHD) 450 x 400 x 140 mm / 17.7 x 15.7 x 5.5 inch
Notes

• Leistungsaufnahme: 290 W, Eingänge: 2x Phono (1,9 mV, 47 kOhm), 2x Band (160 mV), Reserve: (150 mV).
• Ausgänge: 2x Band, Pre-Out, UKW Quattro, Kopfhörer (6,3mm Klinke, vorne, 200 Ohm), 2 Lautsprecherpaare (4-16 Ohm).
• Verstärkerdauerleistung: 2x 65W an 8 Ohm, 2x 80W an 4 Ohm, Gesamtklirrfaktor: 0,1% 

Net weight (2.2 lb = 1 kg) 11 kg / 24 lb 3.7 oz (24.229 lb)
Price in first year of sale 1,499.00 DM

Nikko TRM-650 Stereo Integrated Amplifier, 1978, made in Japan

Link: radiomuseum | hifiengine | schematic [PDF] | schematic

Собран на NEC B617 и NECD587 попарно  на каждое плечо.

Country: Japan
Manufacturer / Brand: Nikko Electric Manufacturing Co., Ltd.; Tokyo
Year: 1978 ?

Category: Audio Amplifier or -mixer
Semiconductors (the count is only for transistors) Semiconductors present.
Main principle Audio-Amplification
Wave bands - without
Details
Power type and voltage Alternating Current supply (AC) / 220 Volt
Loudspeaker - This model requires external speaker(s).
Power out 100 W (unknown quality)
Model: HiFi Verstärker TRM-650 - Nikko Electric Manufacturing
Material Metal case
Shape Book-shelf unit.
Dimensions (WHD) 400 x 130 x 320 mm / 15.7 x 5.1 x 12.6 inch
Notes

• Integrated Stereo Amplifier.
• A&B Stereo Speaker outputs. Bass-, Treble- and Loudness-Control, High/Low Filters.
• Inputs: Phono (MM/MC),Tuner, Aux, and Tape 1 & 2.
• 2 x 50 Watt RMS into 8 ohms, THD 0,07%.
• Available in Black and Silver. 

Net weight (2.2 lb = 1 kg) 8.5 kg / 18 lb 11.6 oz (18.722 lb)