The AT-240 are mic preamps . The AT-241 is the output module with gain make up and output transformer. A attenuator, like a Daven goes between the 2 modules. I will be putting up a data sheet for the AT-241 .

The McCurdy AT240 is a vintage, discrete solid-state microphone preamplifier module originally manufactured in the 1960s for broadcast and recording consoles. Known for its punchy, in-your-face analog sound, it often features Hammond transformers and is frequently compared to vintage modules by Neve, Langevin, and API.

AT240 Specs:

40dB gaininput transformer:  MRI 2003 (made by Hammond)source impedance: 37.5 / 150 ohms, balanced or unbalancedoutput impedance: approx 25 ohms unbalancedpower required: 36v DC at 40 ma.

I have many different McCurdy modules and power supplies PS874/PS825 and as well as program amplifiers 408A These are shown for reference only. I will list them if there is any interest . Just email me.

This item is sold As-Described

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Listed3 months ago
ConditionGood (Used)
Good condition items function properly but may exhibit some wear and tear.Learn more
Brand
Model
  • At 240 & AT 241
Categories
Year
  • 1960's
Made In
  • Canada

Product safety information may be available here.

Vintage Pro Audio Inc.

UMATILLA, FL, United States
Joined Reverb:2014

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