McIntosh MA2375 Integrated Valve Amplifier – First Look
All Image Credit: McIntosh
McIntosh has unveiled the 93lbs/42.2Kg MA2375 Vacuum Tube Integrated Amplifier, marking the their first hi-fi vacuum tube integrated amplifier in more than ten years. This purely analog amplifier chassis (no ADC/DAC’s here), pairs a satin black top panel with a polished stainless steel fascia and dual front mounted blue watt-meters that flank the tube array.
The MA2375 combines a fully analogue vacuum tube pre and power amplifier utilising four KT88 tetrode output valves and four dual triode 12AT7 driver tubes, alongside two dual triode 12AX7A and two dual triode 12AT7 preamp tubes in a single chassis. The design is aimed at giving tube aficionados that warmth and musicality they desire.
Delivering 75 watts per channel, the MA237 benefits from McIntosh’s Unity Coupled Circuit output transformers to maintain consistent performance with 4, 8 or 16-ohm loudspeakers. with a subwoofer out to round things off. Long term reliability is aided by the inclusion of Power Guard Screen Grid Sensor (SGS) tech and Sentry Monitor fuse-less protection. Additionally, a five-band analogue equaliser, and a High Drive headphone amplifier with Headphone Crossfeed Director (HXD) are included. For the vinyl enthusiasts, there is even a phono stage that can accommodate both Moving Coil and Moving Magnet cartridges that includes adjustable gain, capacitance, resistance loading, and RIAA equalization.
Front panel rotary controls give access to; volume, equalisation and input selection with the HR085 IR remote also providing access to all functions. The front panel information display indicating; input selection, volume setting, trim, and various setup parameters.
Rear panel analogue connectivity includes; 2 x stereo XLR and 3 x stereo RCA inputs, 1 x RCA MM/MC phono input, 1 x stereo RCA pre-amp out, 1 x RCA sub out and four pairs of solid cinch speaker binding posts. Control is available using the; 1 x RS232, 1 x IR, 1 x data I/O and 12VDC trigger passthrough 3.5mm connectors. Front panel connectivity provides access to the 1/4″ headphone socket.
Rounding out the design are; Power Control and Home Theatre PassThru.
Features At A Glance:
- All Vacuum Tube
- 75 Watts x 2-Channels
- Unity Coupled Circuit Output Transformers
- Power Guard Screen Grid Sensor, Sentry Monitor, Solid Cinch speaker binding posts
- 6 analog inputs
- 1 Subwoofer output
- 5-band analog equalizer
Specifications:
- Electronics:
- Power Output Rating: 75 W
- Power Output per Channel: 75 W into 4, 8, or 16 ohms
- Number of Channels: 2
- Rated Power Band: 20Hz to 20kHz
- Total Harmonic Distortion: 0.5% maximum with both channels operating from 250 milliwatts to rated power, 20Hz to 20kHz
- Dynamic Headroom: 1.2dB
- Frequency Response +0,-0.5dB: 20Hz to 20kHz
- Frequency Response, +0, -3dB: 10Hz to 50kHz
- Sensitivity Phono: 3mV
- Sensitivity High Level (Balanced / Unbalanced): 600mV/300mV
- Signal To Noise Ratio (Moving Coil): 75dB
- Signal To Noise Ratio (Moving Magnet): 75dB
- Signal To Noise Ratio (High Level): 95dB
- Input Impedance (Balanced / Unbalanced): 44K/22K
- Phono: 100 – 47kΩ; 50 – 400pF
- Damping Factor: >22
- Maximum Output (Balanced / Unbalanced): , 16V Balanced, 8V Unbalanced
- Connectivity:
- Balanced Inputs: 2
- Unbalanced Input: 3
- Phono Input Universal: 1 (configurable as either Moving Coil or Moving Magnet)
- Unbalanced Variable Output: 1
- Headphone Output: 1/4″ High Drive with Headphone Crossfeed Director (HXD®)
- Subwoofer Output: 1
- Home Theater PassThru
- Unbalanced Analog Connector Type: Premium gold-plated solid brass
- Speaker Binding Post Type: Patented Solid Cinch™ Speaker Binding Posts
- Service Port: 1
- Controls:
- Tone Controls: 5-Band
- Tone Bypass and Input Assign
- RS232 Control Input
- Power Control Output 1
- Rear Panel Data Port 2
- Rear Panel IR Sensor Input 1
- Input Level Match
- General:
- Vacuum Tube or Solid State: Vacuum Tube
- Output Type: Unity Coupled Output Transformer
- Output Meters
- Dual Layer Chassis
- Chassis Finish: Polished stainless steel
- Power Requirement: 120V 50/60Hz, 3.6A
- Standby Power Requirement: <0.25 Watts
- Unit Dimensions (W x H x D) 17-13/16″ (45.2cm) x 9-15/16″ (25.2cm) x 20-7/16″ (51.9cm)
- Unit Weight 93 lbs (42.2 kg)
Pricing:
- UK: £16,900.00
- US: $15,000.00
- EU: €19,500.00
For more information visit the McIntosh web site.
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