Vintage AmplifierCollectors archive

McIntosh MC240 Amplifier with Telefunken Tubes

McIntosh First posted September 2012

Archived listing from the original vintage-amplifier.com. Prices, seller details and purchase links have been removed; this page is a reference record, and nothing here is for sale. About this archive.

McIntosh MC240 Amplifier
McIntosh MC240 Amplifier
From the original site

Vintage McIntosh MC240 Amplifier – Vintage Tubes. This unit is in perfect working order. Besides a couple capacitor upgrades which improve the sound, this unit is all original. It is in excellent cosmetic condition for its age. All tubes are the original vintage 12ax7/au7 Telefunken,12bh7 mcintosh RCA and Mcintosh 6l6gc tubes.

Added in 2026

About this model

The MC240 was McIntosh's first stereo power amplifier, made from 1960 to 1969 and rated at 40 watts per channel, or 80 watts in mono, according to the company's legacy list. Its output stage uses four 6L6GC tubes.

This example was all original apart from a couple of capacitor upgrades and still carried its original tubes: Telefunken 12AX7s and 12AU7s, McIntosh-branded RCA 12BH7s and McIntosh 6L6GCs. The seller of the earlier MC-30 in the archive ranked the MC240 among the best amplifiers McIntosh ever made, a view many collectors share.

At a glance
MakerMcIntosh Laboratory, Binghamton, USA
ModelMC240 stereo power amplifier
Production1960–1969 (McIntosh)
Rated output40 W × 2; 80 W mono
Output tubes4 × 6L6GC
Other tubes12AX7, 12AU7, 12BH7 (listing)

Questions collectors ask

What was McIntosh's first stereo power amplifier?

The MC240, introduced in 1960, according to Wikipedia and McIntosh's legacy list.

What output tubes does the MC240 use?

Four 6L6GC tubes; this archived unit still had McIntosh-branded originals.

Sources: McIntosh legacy amplifiers; Wikipedia: McIntosh Laboratory.

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