McIntosh MC7300

Commentary

A stereo power amplifier with half the output of MC2600.

A newly designed output transformer has been adopted to realize output regardless of load and output current capacity exceeding 85A at peak.

The signal system uses a circuit based on MC2600 for balanced / unbalanced input, and is equipped with a 2.5 v and 1.4 v sensitivity selector switch.
It employs technologies such as symmetric amplification after the pre-drive stage and an auto-tracking bias system that does not generate crossover distortion.

The output terminal uses a gold-plated terminal that can handle 6 mm cables.

A newly developed large power meter is also used to detect and calculate the output voltage and current, and accurately displays the actual output voltage that changes from time to time.
The meter indicator responds approximately 10 times faster than the commercial VU meter, and peak hold display is also available.

In the unlikely event of overheating, an automatic return type thermal cutout operates.
It is also equipped with a power guard system that compares input and output waveforms and automatically reduces the gain when the distortion exceeds a specified amount.
With a total of seven of these elaborate protection systems, you can be sure that you don't move in any way.

Model Rating

Type	Stereo power amplifier
Output	Stereo : 300W + 300W (Sine Wave Continuous Output, Load Impedance 2/4/8 Ω) Mono bridge : 600W (sine wave continuous output, load impedance 4/8/16 Ω) Mono / Parallel : 600W (Sine Wave Continuous Output, Load Impedance 1/2/4 Ω)
Output impedance	Stereo : 2 Ω, 4 Ω, 8 Ω Mono bridge : 4/8/16 Ω Mono / Parallel : 1/2/4 Ω
Output frequency band	20 Hz to 20 kHz
Total harmonic distortion factor	Stereo : 0.005% or Less (20 Hz to 20 kHz, 250 mW to 300W, when both channels are driven) Monaural : 0.005% or Less (20 Hz to 20 kHz, 250 mW to 600W, when both channels are driven)
Cross modulation distortion factor (20 Hz to 20 kHz, when both channels are driven)	Stereo : 0.005% or less (with one channel, peak 300W or less) Monaural : 0.005% or less (peak 600W or less per channel)
Frequency Band (at 1W output)	20 Hz to 20 kHz, + 0 -0.25 dB 10 Hz to 100 kHz, + 0 -3.0 dB
Signal-to-noise ratio	105 dB or less (at rated output, A-weighted)
Dynamic headroom	1.9dB(IHF)
Damping factor	40 or more
Input impedance	20k Ω (unbalanced) 40k Ω (balanced)
Input sensitivity	Switching to 2.5 v, 1.4 v
Power Guard	Overdrive at 1 kHz up to 14 dB THD within 2%
Pwer	100 VAC, 50Hz/60Hz, 0.6A ~ 13A
External dimensions	Width 443x Height 196x Depth 420 mm (including terminal)
Weight	35kg