The McIntosh MA2375 Vacuum Tube Integrated Amplifier combines an all-tube preamplifier and power amplifier in a single two-channel component. It delivers 75 watts per channel into 4-, 8- or 16-ohm speakers through McIntosh Unity Coupled Output Transformers.
Its signal path uses two 12AX7A and two 12AT7 tubes in the preamplifier section, four 12AT7 driver tubes and four KT88 output tubes. The MA2375 is designed for listeners who want a complete analog McIntosh system center with line-level sources, vinyl playback, headphones and optional subwoofer integration.
McIntosh MA2375 highlights
- All-tube integrated-amplifier design
- 75 watts per channel into 4, 8 or 16 ohms
- McIntosh Unity Coupled Output Transformers
- Two balanced and three unbalanced line-level inputs
- Universal moving-magnet and moving-coil phono input
- Adjustable phono gain, resistance loading and capacitance
- Five-band analog equalizer with bypass
- Dedicated subwoofer output and variable unbalanced preamplifier output
- High Drive headphone output with Headphone Crossfeed Director
- Home Theater PassThru, Power Control, Data Ports and RS232 integration
- Power Guard Screen Grid Sensor and Sentry Monitor protection
All-tube amplification
The MA2375 uses vacuum tubes throughout its preamplifier, driver and output stages rather than combining tubes with a solid-state power section. McIntosh Unity Coupled Output Transformers provide dedicated 4-, 8- and 16-ohm speaker connections so the amplifier can deliver its rated power across common loudspeaker impedances.
Analog and phono connectivity
Six analog inputs accommodate balanced and unbalanced source components, including a universal phono input configurable for moving-magnet or moving-coil cartridges. The phono section provides adjustable gain, resistance loading and capacitance to support more precise cartridge matching.
A dedicated subwoofer output supports a 2.1-channel system, while the variable unbalanced output can feed an additional power amplifier or another system component. The MA2375 is an all-analog amplifier and does not include a DAC, digital inputs or built-in network streaming.
Key specifications
| Amplifier type | All-tube integrated amplifier |
|---|---|
| Power output | 75 watts per channel into 4, 8 or 16 ohms |
| Output tubes | Four KT88 |
| Driver tubes | Four 12AT7 |
| Preamplifier tubes | Two 12AX7A and two 12AT7 |
| Inputs | 2 balanced, 3 unbalanced and 1 configurable MM/MC phono |
| Outputs | Subwoofer output and variable unbalanced preamplifier output |
| Equalizer | Five-band analog equalizer with bypass |
| Headphone output | High Drive with Headphone Crossfeed Director |
| Dimensions | 17-13/16 in W × 9-15/16 in H × 20-7/16 in D |
| Weight | 93 lb net; 103 lb shipping |
Consultation and speaker matching
Audio Exchange is an authorized McIntosh dealer in Richmond, Virginia. Contact our team to discuss loudspeaker compatibility, cartridge and phono-stage setup, subwoofer integration, private demonstrations, delivery and complete system installation.
