SERIES: Mc2301 Vacuum Tube MONOBLOCK Power AmplifierTYPE: Power Amplifier
“high bandwidth in a tube amplifier thanks to an innovative McIntosh circuit”
300 Watts Mono Power Output Balanced Design Multifilar Wound Output Transformers Wide Power Bandwidth Two Balanced Inputs/Outputs Remote Power Control with Meter Light Control Low Distortion from 20Hz to 20kHz Large Gold Plated Five-Way Binding Posts ½” Thick Glass Front Panel with Tube View Fiber Optic Light Diffuser Illumination.
The new McIntosh MC2301 monoblock tube amplifier hails the fusion of our Unity Coupled and Quad- Differential circuit topologies. From the inception of McIntosh Labs, Unity Coupling stands as one of the premiere tube topologies ever conceived, making possible revolutionary power bandwidth and low distortion. Quad-Differential circuitry, a recent McIntosh innovation, cancels nearly all induced noise and circuit-borne nonlinearities resulting in the lowest noise levels ever achieved in a tube amplifier. With 300 Watts available at 8, 4 or 2 ohms, the MC2301 provides power enough to drive even the most demanding loudspeakers. From the demands of massed chorale to full-on rock and roll, the MC2301 delivers the most extraordinarily lifelike and dynamic performance ever heard from a McIntosh tube amplifier.
The MC2301 design is fully balanced from input to speaker output and the first ever McIntosh tube amplifier to include Quad-Differential circuitry. A blend of tube and solid state devices comprise a super-linear input stage and the output stage, based upon eight KT88 power tubes, terminates in a custom multifilar wound output transformer providing very low distortion and wide power bandwidth. The result? A staggering 117dB signal to noise ratio combined with vanishingly low distortion to provide remarkable low-level linearity and unmatched liquidity.
300 watts into an 8, 4 or 2 ohm load is the minimum sine wave continuous average power output.
OUTPUT LOAD IMPEDANCE
Terminals for 8, 4 and 2 ohms
RATED POWER BAND
20Hz to 20kHz
TOTAL HARMONIC DISTORTION
0.5% maximum harmonic distortion at any level from 250 milliwatts to rated power output.
+0, -0.5dB from 20Hz to 20kHz +0, -3.0dB from 10Hz to 100kHz
1.7V Unbalanced 3.4V Balanced
A-WEIGHTED SIGNAL-TO-NOISE RATIO
117 below rated output
0.5% maximum if instantaneous peak power output does not exceed twice the rated output, for any combination of frequencies from 20Hz to 20kHz
WIDE BAND DAMPING FACTOR
Greater than 15
2 – 12AT7 Voltage Amplifiers 8 – KT88 or 6550 Output Tubes
100 volts, 50/60Hz, 6.6 amps 110 volts, 50/60Hz, 6 amps 120 volts, 50/60Hz, 5.5 amps 220 volts, 50/60Hz, 3 amps 230 volts, 50/60Hz, 2.75 amps 240 volts, 50/60Hz, 2.75 amps Standby 1W
DIMENSIONS (H x W x D including front panel and cables)
12-5/16” (31.3cm) x 17-3/4” (45.1cm) x 23” (58.4cm)
116 pounds (52.6kg) net 141 pounds (64kg) in shipping carton
EXCLUSIVE MCINTOSH POWER ASSURANCE SYSTEM
A collection of technologies that enhance performance and reliability while protecting the amplifier and loudspeakers.
A waveform comparison circuit continuously monitors both input and output signals. Power Guard dynamically adjusts the input level to avoid clipping while preventing harsh sounding distortion.
SENTRY MONITOR® TUBE PROTECTION
Fuse-less short-circuit protection circuit disengages the output stage before current exceeds safe operating level – resets automatically.
UNITY COUPLED OUTPUT CIRCUIT®
Output power is taken from both the plate and cathode of the output tubes. Conventional designs only take output from the latter. This allows ½ the turns ratio, or ¼ the impedance transformation of conventional designs. The result is much lower distortion, wider bandwidth and increased loudspeaker damping factor.
Swift, accurate response reveals program peaks so staying within the power.