Fully Serviced
All items are meticulously serviced and restored to meet factory specifications
Pioneer


AM/FM Stereo Receiver (1974-76)
Serial No. UF3911227M (manufactured June 1974).
Condition: Very Good – some scratches and nicks on top of front panel.
Serviced: 2023 at Mort’s in Levittown, PA.
Power supply re-capped and regulator transistors replaced.
Power amplifier re-capped and pre-driver transistors replaced.
Tone Control board – noisy transistors replaced.
Phono EQ amplifier board – noisy transistors replaced.
Switches, potentiometers and speaker protection relay cleaned.
LEDs installed at meters and dial.
The Pioneer SX-838 is a 5OW RMS stereo receiver featuring PLL FM MPX, precision equalizer, switched-turnover tone control and direct-coupled OCL power amp.
Depend on Pioneer to provide the latest electronic advances and the SX-838 stereo receiver is a perfect example.
Its FM tuner offers high sensitivity and excellent rejection characteristics thanks to its front end equipped with a frequency-linear 4-gang variable capacitor and two MOS FETs.
The FM IF section has a 6-stage limiter and phase-linear ceramic filters.
For the FM MPX demodulator, Pioneer uses a new PLL (Phase Lock Loop) circuit with an IC.
The results of these state-of-the-art touches are immediately apparent: FM sensitivity of 1.8uV, better than 80dB FM selectivity, capture ratio of 1.0dB (all IHF) and better than 30dB stereo separation (50 to 10,000Hz).
The Phono equalizer in the SX-838 provides accurate reproduction of all the sounds in any record groove by assuring no more than ± 0.3dB deviation from the RIAA curve.
In terms of power, the unit produces 50W + 50W of continuous RMS power (both channels driven at 8 ohms) with total harmonic distortion of less than 0.3% - remember that this figure is measured and guaranteed over the entire spectrum from 20 to 20,000Hz.
The SX-838 is distinguished from all other receivers in its price range by offering switched-turnover flexibility in its tone control operation, permitting the creation of a variety of tonal characteristics to match your room's acoustics or your mood.
And when it comes to versatility, it reproduces no less than six program sources (AM, FM, Phono 1, Phono 2, Mic and Aux).
It also has two stereo sets of tape deck connections with monitor switching (and deck-to-deck duplication).
If you wish, use the noise-reduction adaptor terminals to connect a third tape deck.
This unit is provided with a special Recording Selector, enabling you to record FM broadcasts while listening to the disc reproduction and vice versa - a unique time-saving device for your listening pleasure.
A total of three pairs of stereo speaker systems can be connected to the SX-838 (with a front-panel switch to use any one or any two of them at once).
Speaker selection and source indicators are provided on the attractive dial panel.
It's a Pioneer value from top to bottom, and your best buy for stereo receiver economy.
Tuning range: FM, MW
Power output: 50 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 70kHz
Damping factor: 45
Input sensitivity: 2mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)
Signal to noise ratio: 65dB (mic), 70dB (MM), 95dB (line)
Output: 150mV (line), 30mV (DIN), 1V (Pre out)
Speaker load impedance: 4Ω to 16Ω
Semiconductors: 4 x FET, 4 x IC, 43 x transistors, 24 x diodes
Dimensions: 520 x 175 x 420mm
Weight: 16.2kg
Accessories: FM T-type antenna
Year: 1974
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There’s something undeniably magnetic about vintage audio gear. The tactile weight of milled aluminum knobs, the warm glow of dial lamps, and—above all—the rich, analog sound that today’s sterile streaming boxes can’t quite replicate. But time is merciless: capacitors dry out, switches oxidize, and those gorgeous walnut cabinets lose their sheen. That’s where the art (and science) of our vintage audio refurbishment comes in.
Why Vintage Audio Still Matters
In the golden era of hi-fi—roughly the mid-1960s through the early 1980s—companies like Marantz, McIntosh, Pioneer, Sansui, and Technics were engaged in an arms race of build quality. This was before cost-cutting plastics and disposable designs; amplifiers were over-engineered, receivers were works of art, and turntables were precision instruments.
Owning one wasn’t just about sound; it was about status and permanence. These machines were built to last a lifetime—or two. The irony? Decades later, they often do, provided they’re given the care they deserve.
The Philosophy of Refurbishment
Refurbishment is not just about fixing; it’s about preserving authenticity while ensuring reliability. The goal is to keep that lush, analog character alive without compromising safety or sound quality.
Some enthusiasts chase museum-level originality—keeping every factory component in place. Others opt for sympathetic modernization, upgrading parts that never existed in the ’70s to improve performance. Both approaches can be valid; it depends on your vision.
The Turntable Store refurbishing process.. step by step
Step 1: The Initial Encounter
When we first meet a 40-year-old amplifier, we resist the urge to plug it in right away. That dusty Marantz 2270 might look gorgeous, but old electrolytics and brittle insulation can short instantly under full voltage.
Instead:
Tip: A faint musty smell? That’s often the scent of old phenolic boards, not trouble. But a burnt smell? That’s trouble.
Step 2: Deep Cleaning & Control Detox
Dust is the enemy of good sound, that is why we clean the interior carefully with compressed air and a soft brush.
The real magic comes with switches and potentiometers. Over decades, oxidation builds up, causing scratchy controls and dropouts. A deep contact clean in each pot and switch, followed by vigorous cycling, often restores silky-smooth operation.
Step 3: Electrical Resurrection
This is where science meets art:
Step 4: Cosmetic Glory
Refinishing the walnut cabinet can transform a unit. We do use real wood oil or Danish oil, not polyurethane. We clean the glass dial carefully; those silkscreened letters are fragile.
Knobs? We polish with metal cleaner, but never use abrasives on anodized aluminum.
Faceplate lettering? We avoid harsh chemicals—just mild soap and a microfiber cloth.
Step 5: Calibration & Sonic Check
After the repair and cleaning, it’s time to dial in the performance:
When done right, the result is astonishing: a sound that breathes—liquid mids, velvet highs, and bass with a tactile presence that modern gear rarely matches.
Our promise for Audiophile-Level Results
Why It’s Worth It
The payoff isn’t just sonic—it’s emotional. Restoring a 1970s Marantz or Sansui is like bringing a classic car back to life. Every glowing dial lamp, every smooth rotation of a volume knob, connects you to an era when music mattered enough to build machines like this.
And when you drop the needle on your favorite record and hear that warm, enveloping sound, you’ll know: this wasn’t just a repair. It was a resurrection.
We have a 14-day return policy, which means you have 14 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
To start a return, you can contact us at theturntablestore@gmail.com. Please note that returns will need to be sent to the following address:
The Turntable Store
45 Market Square
Manheim PA 17545
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
You can always contact us for any return question at theturntablestore@gmail.com.
Damages and issues
Please inspect your order upon reception and contact us immediately if the item is defective, damaged or if you receive the wrong item, so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, like turntable needles and custom products (such as special orders or personalized items). We also do not accept returns for hazardous materials, flammable liquids, or gases. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items or gift cards.
Exchanges
The fastest way to ensure you get what you want is to return the item you have, and once the return is accepted, make a separate purchase for the new item.
European Union 14 day cooling off period
Notwithstanding the above, if the merchandise is being shipped into the European Union, you have the right to cancel or return your order within 14 days, for any reason and without a justification. As above, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
Refunds
We will notify you once we’ve received and inspected your return, and let you know if the refund was approved or not. If approved, you’ll be automatically refunded on your original payment method within 10 business days. Please remember it can take some time for your bank or credit card company to process and post the refund too.
If more than 15 business days have passed since we’ve approved your return, please contact us at theturntablestore@gmail.com.
We ensure our customers have the best shopping experience
All items are meticulously serviced and restored to meet factory specifications
We pack with precision and ship in brand new, appropriately sized, boxes.
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