Download QED PROD DIRECT (DEC) 1A (Page 1)

Headphone Control and Amplification
MA18 HEADPHONE VOLUME CONTROL
Features
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Add headphone output to Amplifiers not equipped with that facility.
Connects to speaker outputs
Automatically switches speakers “off” when headphone jack is inserted.
Controls headphone volume
Machined from solid brass and nickel silver plated connectors (4mm)
Silver plated switch contacts
Size (mm): 110 (w) x 55 (h) x 120 (d)
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Amplifies line level output to drive upto two pairs of headphones
Output 2 Watts R.M.S. per channel
Channel separation : 60 dB
Input impedance : 10K
Signal to noise : 70 dB
Volume control
Balance control
Connects to tape loop or Pre-Amp output
12 volt D.C. 500 mA power supply required
Gold plated phono sockets
Size (mm): 160 (w) x 55 (h) x 120 (d)
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Converts a line level input to accept a moving magnet phono cartridge
Full R.I.A.A. equalisation
Input Sensitivity @1khz 5mV in gives 175mV out = 31dB gain
Input Impedance 47kΩ / 150pF
9 volt battery (PP3 type) or 12 volt D.C. power supply required
Size (mm) : 210 x 38 x 38
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Allows a C.D. player to be connected directly to a suitable Power Amplifier
Pro-grade close tolerance potentiometer
Self cleaning nickel silver switch contacts
Independent earth wiring
Gold plated phono sockets
Size (mm): 110 (w) x 55 (h) x 120 (d)
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Adds stereo microphone input capabilities
Switched gain : Hi = x200 , Lo = x40
Switched impedance : Hi = 10K , Lo = 600R
Signal to noise : Better than 60 dB
Maximum output voltage : 250 mV
Overload margin : 20 dB
Level control
Balance control
Connects to tape loop or Pre-Amp output
12 volt D.C. 500 mA power supply required
Gold plated phono sockets
Size (mm): 160 (w) x 55 (h) x 120 (d)
MB45 HEADPHONE AMPLIFIER
Pre-Amplifiers
DS-1 DISCSAVER
MA34 C.D. PASSIVE PRE-AMP
Features
MB46 MICROPHONE AMPLIFIER
Features
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