Skip to content

Cart

Your cart is empty

NEW ARRIVALS + SYSTEM OF THE WEEK NEWSLETTER

Subscribe to receive updates, access to exclusive deals, and more... We promise not to give your info away.

Marantz Model 150 Vintage AM/FM Tuner with Scope

Sale price$1,790.00
Free Shipping on *ALL* Electronics (Excluding Speakers, Contiguous 48 US States Only)

Pickup available at SkyFi 479

Usually ready in 24 hours

Marantz Model 150 Vintage Am/Fm Tuner With Scope

Marantz Model 150 Vintage AM/FM Tuner with Scope

SkyFi 479

Pickup available, usually ready in 24 hours

479 South Broad Street
Glen Rock NJ 07452
United States

+12018790000

One of the best looking tuners in the vintage market. Originally produced from 1976 - 1978.

It features a gorgeous large & fully working oscilloscope display, along with a backlit dial in typical Marantz colors.

Working as it should after a light service, and ready to tune in your favorite station.

Condition is very respectable considering its age with light signs of aging.

Tech Notes:
On intake testing all functions of this tuner worked. Only minor adjustments needed.
• Adjusted FM oscillators L and C for more accurate dial tracking. 
Adjusted AM oscillator L and C for more accurate dial tracking.
Scope tested and working.
AM and FM Dial tracking good after adjustments completed.
Stereo PASS.
Stereo Separation PASS.
Sensitivity PASS.

Click below to add our recommended matching cables from Kimber Kable, all brand new as SkyFi is an official Kimber dealer.

Kimber Kable - RCA Interconnects - Better

Kimber Kable - RCA Interconnects - Best

The SkyFi Testing Process for Tuners:

We start with a visual inspection of all internal components to make sure that there are no signs of heat stress or damage. Capacitors are checked for telltale signs of predictive failure including bulging, shrunken wrappers, or physical leakage. We also inspect the PCBs for discoloration from resistors or transistors that may have been running hot. On vintage units we often spot check select capacitors for value and ESR. Vintage analog tuners also have moving parts related to the tuning gang and dial string. These parts are inspected for smooth operation.

If the unit passes visual inspection it is bench tested for a handful of key performance parameters using a Sencore SG80 AM/FM Stereo Analyzer. The SG80 allows us to “simulate” an ideal radio station using precision test signals instead of music. This device, in conjunction with an oscilloscope allows us to properly evaluate the following parameters:

1.  AM Reception (Where Applicable)

2.  FM Mono Reception & Tuning Meter Function

3.  FM MPX Reception (Stereo)

4.  Dial Tracking - How accurately the tuner dial or display indicates the actual frequency of the broadcast being received.

5.  Stereo Separation - A properly working stereo tuner will have minimal crosstalk between the left and right channel.

6.  Sensitivity & Signal Strength Meter Function - By lowering the output of the SG80 we can simulate weak stations and determine how well the tuner will be able to pull in weak distant stations. This adjustment also helps us verify signal strength meter function.

If the tuner has acceptable performance related to the parameters above we connect the unit for listening tests with a simple dipole antenna. We listen for audio reproduction quality of local stations and evaluate how many stations the tuner can receive while we sweep through the dial. We are looking to verify that the tuner can decode stereo on strong local broadcasts and pick up a wide variety of local stations at the bottom, middle, and top of the frequency band. At this point we also test convenience features such as muting, filters, built in oscilloscope function, etc.

We finish up with an extended listening test on our long term test rig. We tune in a strong local station and monitor for drift over a 2-3 hour period.

Item

Included

Original Box

Not Included

Manual

Not Included

Remote

Not Applicable

Cables

Yes - Power Only

Physical Condition

6 / 10

Working Condition

10 / 10

SKU: 103505
Marantz Model 150 Vintage Am/Fm Tuner With Scope
Marantz Model 150 Vintage AM/FM Tuner with Scope Sale price$1,790.00