QC Twenty Four
The QC Twenty Four is a valve line-level pre-amplifier from Quad built around a single 6111 twin triode, with relay input switching. It suits hi-fi owners who want a valve pre-amp with five line inputs, two tape loops and an optional phono stage.
- Single 6111 twin triode valve stage
- Relay input switching
- 5 line-level inputs plus optional Phono port
- 2 buffered tape loops (Tape Play and Record)
- 2 main outputs
- Frequency response 5Hz - 50kHz (+0dB/-0.5dB)
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The QC Twenty Four is a stereo pre-amplifier that uses one 6111 twin triode as its gain stage. The designer chose the valve from new old stock, and the unit is built around the idea of keeping the signal path as direct as possible. Input selection is done with relays, and the transformers are specified by an outside specialist.
On the back panel there are five line-level inputs, labelled CD, Tuner, Aux 1 and Aux 2, plus an optional Phono port. Two buffered tape loops provide Tape Play and Record connections for recorders. Two main outputs feed the power amplifier or amplifiers.
Quoted figures include 15dB of line-stage gain, a frequency response of 5Hz to 50kHz (+0dB/-0.5dB), hum and noise better than -80dB, and a recommended minimum load of 50k Ohms. Maximum power consumption is 15VA. A related QC Twenty Four P model is listed alongside it.
Vidéo
Spécifications
- Marque
- Quad
- Modèle
- QC Twenty Four
- Catégorie
- Hi-Fi et audio maison › Amplificateurs
General
- Model
- QC Twenty Four
- Type
- Pre-amp
- Valve complement
- 1x 6111 twin triode
Inputs
- Line level inputs
- 5 x Line level
- Named inputs
- CD, Tuner, Aux 1, Aux 2
- Phono input
- Optional Phono port
- Tape loops
- 2 x Buffered tape loops
- Input switching
- Relay
Outputs
- Main outputs
- 2
- Tape connections
- 2 Tape Play and Record
- Recommended minimum load
- 50 k Ohms
Audio
- Frequency response
- 5Hz - 50kHz (+0dB/-0.5dB)
- Hum and noise
- Better than -80dB
- Line stage gain
- 15dB
Power
- Power consumption
- 15VA maximum