Mcintosh Mac 4100

This is the McIntosh 4100 receiver. It was produced from 1978 up until 1985 and had a retail price of nearly $2000.00. The design seems to have a love-hate quality with audiophiles and collectors.
The Mac 4100 is a 75 watt solid state late 1970s (78′ thru 85′) receiver that ran you $1999 (list) back in the day. I was to bit shocked to find out that they go for $800-1200 used today 45+ years later!! Apparently even a broken one goes for around $300 just for the parts value. Here’s one on eBay for $1199 plus $95 shipping.

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McIntosh MAC-4100 AM/FM Stereo receiver in excellent condition. Rated at 75 watts RMS per channel into 8 ohms and 100 watts RMS per channel into 4 ohms. It has been serviced. Our original Performance Verification Report included as well as a copy of the owner's manual. Manufactured from 1979 to 1985 with a retail price of $2000.00.

From McIntosh:

The phono amplifier in the MAC4100 uses a new high technology integrated circuit operational amplifier. Dell5182 how to install xbox 360 games on usb. Its differential input stage has been optimized for low noise and low distortion performance.

Electronic input selector switching uses field effect analog switches. The mechanical input selector simply switches small amounts of DC which turn the FET analog switches off or on. This design eliminates degradation of frequency response and also eliminates noise pickup from long signal paths necessary with conventional mechanical switching. It means, as well, that switch clicks and pops have been eliminated.

The equalizer amplifier is constructed with ion implanted junction field effect operational amplifiers. These new devices amplify signals with a 6 dB better signal to noise ratio than their bipolar counterparts.

Amplifiers are capable of delivering large quantities of power when they are driven to clipping. Clipping is caused when the amplifier is asked to produce more power output than it can deliver with low distortion.

The MAC4100 has a built-in waveform comparator that compares the wave shape of the input signal with the output signal. If the disparity between the two signals exceeds 0.5% a front panel signal illuminates in red at the top of the power output indicators, with any further increase in distortion the Power Guard circuit will operate.

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Power Guard anti-clipping circuit.classicaudio.com
Auto-Phono shut off circuit (turns receiver on and off with turntable).
Made in U.S.A.

Controls:

Equalizer Frequency 30 Hzclassicaudio.com
Equalizer Frequency 150 Hz
Equalizer Frequency 500 Hzclassicaudio.com
Equalizer Frequency 1500 Hz
Equalizer Frequency 10 KHz
Loudness
Balance
Volumeclassicaudio.com

Switches:

Input Selector: Aux 1, Aux 2, AM, FM, Phono 1, Phono 2
Monitor Tape 1classicaudio.com
Monitor Tape 2
Tape Copy T1 > T2
Tape Copy T2 > T1classicaudio.com
Mono
FM Muteclassicaudio.com
Speakers 1
Speakers 2
Speakers 3classicaudio.com
Power

Indicators:

Signal Strength Meter
Tuning Meter
Left Channel Power Meter: 7 Segment LED plus Power Guardclassicaudio.com
Right Channel Power Meter: 7 Segment LED plus Power Guard
AUX 1
AUX 2classicaudio.com
AM
FMclassicaudio.com
PH-1
PH-2
AFL (Automatic Frequency Lock)classicaudio.com
FM MPX

Jacks:

Head Phones 1classicaudio.com
Head Phones 2
Tape 2 Inclassicaudio.com
Tape 2 Out

Rear Panel:

AC Outlet Unswitched (2)
AC Outlet Switchedclassicaudio.com
Turntable AC (2)
Turntable AC: Auto/Manualclassicaudio.com
Antenna Inputs: FM 75 ohm, FM 300 ohm, AM
AM Ferrite Bar Antenna
Phono 1 (L, R)
Phono 2 (L, R)classicaudio.com
Aux 1 (L, R)
Aux 2 (L, R)classicaudio.com
Tape 1 Rec (L, R)
Tape 1 Play (L, R)
Tape 2 Rec (L, R)
Tape 2 Play (L, R)
Pre-Out (L, R)classicaudio.com
Main-In (L, R)
Scope Vertical
Scope Horizontal
Speakers 1classicaudio.com
Speakers 2
Speakers 3

Shipping weight 50 Lbs.

$1400.00

ClassicAudio.com
Phone 916-488-6016 or
Send email click here.

Buyer to pay item purchase price plus shipping charges from 95609.
Shipping charges will depend on the item purchased and delivery destination.
Please contact classicaudio.com for a shipping charge quote.
Shipping to the U.S. only.
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This item includes our 60 day / 2 year limited warranty!
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Specifications:

100 Watts RMS per channel into 4 ohms.
75 Watts RMS per channel into 8 ohms.
Power Guard anti-clipping circuit.
Auto-Phono shut off circuit. (turns off receiver when turntable shuts off)

Controls:

Equalizer Frequency 30classicaudio.com
Equalizer Frequency 150
Equalizer Frequency 500classicaudio.com
Equalizer Frequency 1500
Equalizer Frequency 10K
Loudness
Balance
Volumeclassicaudio.com

Switches: