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For sale: The McIntosh MI3 Performance Indicator is a legendary piece of vintage audio test and monitoring equipment, designed to visually display stereo signal strength, phase, and balance. When paired with compatible McIntosh amplifiers or preamps, it provides a precise and elegant way to monitor audio performance in real time.
The MI3 features McIntosh's signature green-glow presentation, heavy-duty construction, and beautiful analog scope display that has become iconic among collectors and audiophiles.
Condition: The unit operates perfectly, with all display functions, inputs, and indicators responding as expected. It looks like the glue behind the glass front plate seems to be loose. We have exchanged the OB2 rectifier as the original one was faulty. We sadly did not had the original rectifier. This unit has been changed to 220V! All and all a realy nice Mcintosh. But not in it's origginal 110v state.
''Important note when tested: When we find there's either a small thing wrong, or not 100% working we offer our listings for parts or repair to avoid unwanted issues after purchase''
Specs:
- Function: Stereo phase, level, and balance display unit (oscilloscope style)
- Input compatibility: Works with McIntosh preamps and amps (scope outputs)
- Voltage: 220V AC
- Display: CRT oscilloscope tube with stereo visual output
Dimensions (LxWxH): 43x36x14cm
Weight: 9 Kg
Volts: 230v (in case of only 230v. in USA you will need a adapter)
Working condition: Fully working (See pictures for the cosmetic condition of this lot)
Missing or damages: Minor Usage Marks
Does come with fixed power cable.
We ship worldwide.
Will ship to the USA as well. We ship DDP bases (Delivery Dutie Paid)
-Shipping in the EU up to 30 KG (max)
-Shipping outside of the EU up to 20 KG (max)
Please note: ‘'Whenever an item exceeds the weight noted above. Please ask for a shipping quote before making a purchase. The shipping costs are estimated in our shop because we do not know the shipping address.
Picking up the item is also possible. It can be picked up in Alkmaar
Delivery by us is also possible in some cases. Please reach out to us for more information about deliveries
State of listing: If a listing is listed ''for parts or not working'' returns are not accepted.
When we offer our products with the notice ''Serviced'' or ''Fully serviced'' that means the device is either lightly ''serviced'' with a new belt, and cleaned the pots, Or ''Fully serviced'' recapped, Quiescent current adjusted etc as expected from a full service
Generating expert take…
McIntosh Laboratory, founded in 1949 in the United States by Frank H. McIntosh and Gordon Gow, embodies a storied heritage of American audio innovation. Originally based in Silver Spring, Maryland, before relocating to Binghamton, New York, where products are still handcrafted today, the brand emerged from a commitment to superior sound reproduction. From powering President Lyndon Johnson's inauguration to the Grateful Dead's Wall of Sound at Woodstock, McIntosh has shaped pivotal moments in music history and pop culture, earning its place as a cultural icon.
The company specializes in a comprehensive lineup of high-fidelity components, including renowned amplifiers—particularly its revered tube models for their warm, enveloping sound—along with solid-state power amps, stereo tuners, loudspeakers, turntables, music streamers, processors, and digital-to-analog converters. This breadth supports both two-channel stereo systems and multi-channel home theaters, delivering immersive experiences in music and film. Iconic blue watt meters on their gear have become globally recognized symbols of precision and power.
Positioned firmly in the high-end market, McIntosh commands respect among discerning audiophiles for its uncompromising quality, luxurious build, and timeless design. Far from mid-tier or niche boutique, it stands as a premium benchmark, favored by legendary musicians and producers across decades, blending vintage allure with modern performance for those who demand the ultimate in sonic fidelity.
See all McIntosh listings on RADAR.
