The C2300 Vacuum Tube Preamplifier combines a suite of potent engineering enhancements with smart, user-programmable features to deliver a truly extraordinary audio preamplifier. Each input may have the bass, treble, and mono/stereo mode adjusted and stored in memory. When individual inputs are selected, these settings will engage as preset by the listener. All adjustments may be made either from the frontpanel or remote control.
Two 12AX7a Vacuum Tubes are used for each of three sections: the Moving Magnet phono section, the Moving Coil section, and the high-level preamp section. Its phono sections are fully adjustable “on the fly,” so the listener may change impedance or loading settings as the record plays. A high performance headphone amplifier with a 1/4" headphone jack is included.
C2300 Vacuum Tube Preamplifier Features
EIGHT PROGRAMMABLE SOURCE SELECTIONS
All eight source elections accommodate unbalanced inputs while four of the either also accommodate balanced inputs. Any of 12 standard names can be assigned to a source selection and the panel display can be customized to indicate only available sources.
SILENT ELECTROMAGNETIC SWITCHING
Signal routing is accomplished through digitally controlled electromagnet switching devices. Precision switch contacts, isolated from environmental contamination inside inert gas-filled glass tubes, provide the most reliable, quietest and lowest distortion switching possible.
VRV (VARIABLE RATE VOLUME) DIGIALLY CONTROLLED ATTENUATOR
The output attenuator controls volume over 214 steps of .5dB each with accuracy
within .1dB. The volume vs. rotation rate varies as preamplifier gain varies and
attenuation changes occur at eh zero crossings of the audio signal to prevent audible artifacts during adjustment.
- Six Vacuum Tube Design
- Variable Rate Volume with Multi-Stage Precision Digitally Controlled Attenuator
- Vacuum Tube Moving Coil and Moving
- Magnet Phono Preamplifiers
- Custom top cover with lighted tube view
- Custom R-Core Power Transformer
- IR Remote control
- Headphone Jack
- Pass-Thru Integration
C2300 Vacuum Tube Preamplifier Specifications
FREQUENCY RESPONSE
+0, -0.50dB from 20Hz to 20kHz
+0, -1dB from 10Hz to 100kHz
RATED OUTPUT
Balanced: 5VRMS at MAIN, 1 and 2
Unbalanced: 2.5VRMS at MAIN, 1 and 2
OUTPUT IMPEDANCE
250 ohms
MAXIMUM VOLTAGE OUTPUT
Balanced: 16VRMS at MAIN, 1 and 2
Unbalanced: 8VRMS at MAIN, 1 and 2
TOTAL HARMONIC DISTORTION
0.08% maximum from 20Hz to 20kHz
SENSITIVITY
Phono, MC: 0.45mV for 2.5V
Phono, MM: 4.5mV for 2.5V
High Level: 450mV for 2.5V
SIGNAL-TO-NOISE RATIO (A-Rated)
Phono: 80dBHigh Level: 93dB
MAXIMUM INPUT SIGNAL
Phono, MC: 5mVPhono, MM: 50mV
High Level: 5V Balanced
INPUT IMPEDANCE
Phono:MC: 25, 50, 100, 200, 500, or 1000 ohms
MM: 47k ohms, 50 to 750pF, 50pF steps
High Level:
Balanced: 40k ohms
Unbalanced: 20k ohms
VOLTAGE GAIN
Phono, Moving Coil to Record Output: 60dB
Phono, Moving Magnet to Record Output: 40dB
High Level to Record Output: 0dB
High Level to Main Output: 15dB
OVERALL DIMENSIONS (H x W x D)
7-1/8” (18.1 cm) X 17-1/2” (44.4 cm) X 14-1/2”
(36.8 cm) including clearance for connectors.
Knob clearance in front of the mounting panel
is ¾” (1.9 cm)
WEIGHT
29.5 lbs (13.41 kg) net
44.9 lbs. (20.41 kg) in shipping carton
