McIntosh C70 (2018–2020)

Name: McIntosh C70
Brand: McIntosh

Limited-edition vacuum tube preamplifier built for McIntosh’s 70th anniversary. All-analog design, visible tubes, modern connectivity.

Overview

The McIntosh C70 is a 2-channel vacuum tube preamplifier made from 2018 to 2020 for McIntosh’s 70th anniversary. It started as one of 70 limited Commemorative Systems - each paired with the MC2152 amplifier and marked “1 of 70.” The initial run sold out, and a non-commemorative version came out afterward. The look is retro, but the features are modern: balanced and unbalanced inputs, moving coil and moving magnet phono stages, and a high-drive headphone amplifier with Headphone Crossfeed Director (HXD®) technology. The idea was classic tube sound with contemporary engineering.

Specifications

Year of Production	2018–2020
Product Type	Preamplifier
Tubes	(5) 12AX7A and (1) 12AT7 vacuum tubes
Inputs	Two balanced, three unbalanced, one MC, one MM phono
Outputs	Two pairs each of balanced and unbalanced
Phono Inputs	Moving Coil (MC) and Moving Magnet (MM)
Frequency Response	15Hz to 100kHz
Total Harmonic Distortion	0.08%
Gain	60dB (MC), 40dB (MM), 15dB (line)
Input Sensitivity	0.45mV (MC), 4.5mV (MM), 450mV (line)
Signal to Noise Ratio	75dB (MC), 75dB (MM), 100dB (line)
Output	2.5V (Pre out), 8V (Pre out Max)
Voltage	120V
Dimensions	17.5” x 6” x 18” (44.45cm x 15.24cm x 45.72cm)
Weight	25 lbs

Design

The C70 is all analog, with a retro look. The front panel is black glass with 70th Anniversary lettering, an illuminated logo, control knobs, and aluminum end caps, all on a polished stainless steel chassis. The tubes show through a glass panel in the top cover. You run it with physical knobs and rocker switches, and modern LED indicators show input selection and volume level. Power Control turns connected McIntosh components on and off automatically. The High Drive headphone amplifier uses HXD® technology for improved stereo imaging.

Context

McIntosh introduced the C70 in 2018 as part of a limited run of 70 Commemorative Systems, marking its 70th anniversary in 2019. Each system sale included a $1,000 donation to Save the Children. Once the limited systems sold out, a non-commemorative version of the C70 became available. It shares design and feature similarities with the modern C22 preamplifier, but it was built as a special tribute with unique 70th Anniversary markings. The commemorative units have matching serial numbers and “1 of 70” labeling. Standard anniversary models lack both.

Market

The original MSRP was $7,000. Current market value runs from $7,000 to $9,000, depending on condition and accessories. The limited edition status of the 70 Commemorative Systems makes them highly collectible, with a collectibility rating of 8/10. Maintenance means replacing the 12AX7A and 12AT7 tubes every 2-3 years and checking the tube contacts. Long-term ownership may call for attention to capacitor aging. Units have turned up in new old stock condition, and also with one or two previous owners and no service history.