Jadis JA-80

 

 

monobloc power amplifier automatic 60 Watt Rms per channel 20 Hz - 27 KHz 500 mV 6550/KT90/KT88 X 8 ECC82 X 2 ECC83 X 2 260 x 625 x 240 mm each bloc 35 Kg per mono amp 190 W each mono amplifier

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audio research D-115

Power output	100 watts per channel minimum continous power (both channels operating) at 16 ohms from 20Hz to 20kHz with less than 1% total harmonic distortion (typically less than .005% at one watt) Approximate actual power available per channel at "clipping" (both ch. op., 1kHz): 110 Watts
Power bandwidth	(-3dB points) 12Hz to 60kHz
Input sensitivity	0.6V RMS for rated output.
Input impedance	75 kOhms, nominal
Output taps
Output regulation	Approximately 0.5dB, 16 ohm load to open circuit.
Overall negative feedback	19.5 dB
Damping factor	Approximately 17
Distortion	Intermodulation distortion: Less than 0.1% at 1dB below rated output (100V p to p, 16 ohms - SMPTE method).
Slew rate	15 V/µs
Rise time	5 µs
Hum & noise	90dB below rated output - less than 2mV RMS - (Broad-bandwidth unweighted, inputs shorted)
Power supply energy storage	280 joules
Power requirements	105-125VAC 60Hz (210-250VAC 50Hz) 1000 watts maximum, 400 watts at "idle".
Tube complement	D-115: (7) 6922, (4 matched pairs) 6550, (1) 6550, (1) 12AT7
	D-115 MKII: (3) 6922, (4) 6FQ7, (4 matched pairs) 6550, (1) 6550, (1) 12AT7
Other
Dimensions	19" (48 cm) W (standard rack panel) x 7" (18 cm) H x 16.5" (42 cm) D (front panel back). Handles extend 1 5/8" (4.1 cm) forward of the front panel.
Weight	68 lbs. (31 kg) Net; 84 lbs. (38 kg) Shipping

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Conrad-Johnson MV60

Vacuum-Tube Power Amplifier

 

 Specifications

MV60 Vacuum-Tube Power Amplifier

• Power (ultralinear operation): 55 watts per channel from 30 Hz to 15 kHz at no more than 1% THD, both channels driven into 4, 8, or 16 Ohms. (when re-connected for the chosen load impedance)
  
   
• Power (triode operation): 25 watts per channel from 30 Hz to 15 kHz at no more than 1.5% THD, both channels driven into 4, 8, or 16 ohms. (when re-connected for the chosen load impedance)

Sensitivity: .8 volts rms to rated power (ultralinear)
Gain: 26 dB
Freq. Response: 20 Hz to 20 KHz +0/-.5 dB
Hum and Noise: 95 dB below 55 watts
Input Impedance: 100 Kohms
Phase: phase correct
Dimensions: 13.25D x 17.625W x 7H inches
Weight: 48 lbs.
Features: Built in led bias indicators, for easy, instrument-free biasing of the output stage.

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Antiqua by Luigi Cavenaghi

 

L'integrato di Luciano Cavenaghi non ha un nome preciso, ma fa parte della linea di elettroniche denominate 'Antiqua' dello Studio Progettazione Audio. 

E' un 15 w + 15 w monopentodo, con alimentazione stabilizzata per griglia-schermo; monta valvole finali KT90, per la sezione pre le 12AT7 (note come ECC81) e come driver le EF86 a pentodo in configurazione triodo.  

Gli alimentatori stabilizzati utilizzano le 6080 (ENA12X7). 

Ha morsetti separati per diffusori a 4, 8 e 16 Ohm e 2 ingressi selezionabili tramite switch.