RG Pro 16 Dynamic Processor Expander * Fully Serviced

RG Pro 16 Dynamic Processor Expander * Fully Serviced

RG Dynamics

Regular price $150.00 USD
Sale price $150.00 USD Regular price
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The RG Pro 16 Dynamic Processor (often just RG-16) is a vintage Hi-Fi audio component, specifically a dynamic range expander, designed by RG Pro to reduce noise like tape hiss or record scratches, making quiet parts quieter and restoring lost dynamic range for cleaner, more impactful sound, featuring adjustable expansion (4-16dB), automatic attack/release, and often housed in classic wood-grain or metal casings for home audio systems. 
Key Features & Functionality:
  • Dynamic Expansion: It makes quiet signals even quieter while leaving loud signals untouched, effectively increasing the difference between soft and loud sounds.
  • Noise Reduction: Ideal for cleaning up vinyl records or analog tape by electronically scrubbing out background noise, scratches, and tape hiss.
  • Automatic Control: Features automatic attack and release times that adapt to the music, re-controlling dynamics for balanced reproduction.
  • Controls: Typically includes controls for expansion level (dB), and often switches for different modes or types of expansion.
  • Metering: Large front-panel meters (twin levels) help users visualize the expansion effect.
  • Vintage Appeal: Known for its classic look, often with walnut wood sides (PRO-16W) or a metal rack-mount (PRO-16B). 
In Simple Terms:
Think of it as a "noise eraser" and "excitement booster" for old records or tapes, bringing back the punch and clarity that time or recording limitations removed, without making the music sound unnatural. 

Specs


Total Expansion:
4 dB to 16 dB continuously variable

Downward Expansion:
-4 dB to —7 dB

Upward Expansion:
O to +9 dB

Expansion Attack Rate:
600 microseconds

Expansion Decay Rate:
80 milliseconds

Maximim Output Voltage:
6.5 Volts at 0.5% distortion, 1KHz; 
maximum expansion; 50k Ohm load

Rated Output Voltage:
1 Volt

Minimum Sensitivity:
50 millivolts, level control maximum

Harmonic Distortion:
.08% at 1 Volt output, 1KHz; 16 dB expansion
.04% at 0.5 Volt output

Intermodulation Distortion:
0.1% 60 Hz and 2 KHz mixed 1:1, 1 Volt out 

Hum and Noise:
80 dB below 1 Volt; expansion maximum

Input Impedance:
80K Ohms

Output Impedance:
300 Ohms

Power Requirements:
120V, 60Hz, 3 watts

Dimensions:
(PRO-16B) 19" x 3½" rack panel, 12" deep 
(PRO-16W) *18" × 3½" x 12" Deep 

Weight:
6 lbs., 12 oz.

*Wood end blocks on the PRO-16W are constructed of solid, hand rubbed American Walnut.

In stock

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:

  • We inspect for corrosion, burnt resistors, and leaking capacitors.
  • We use a Variac (variable transformer) to bring up voltage slowly, reforming capacitors rather than shocking them back to life.
  • We check fuses—not just for continuity but for correct ratings.

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:

  • Capacitors: Electrolytic caps often need some attention. We replace out-of-spec caps with high-quality modern equivalents (Nichicon, Panasonic), avoiding over-capacitance unless the power supply can handle it.
  • Resistors: Carbon comp resistors drift over decades. Measure and replace out-of-spec parts.
  • Transistors: Certain vintage transistors (e.g., 2SC458) are notorious for noise. We do swap defective ones for modern low-noise equivalents.
  • Relays & Lamps: Speaker relays oxidize; replace or clean contacts. Dial lamps? Upgrade to warm LEDs for a factory glow without the heat.


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:

  • We do adjust bias and DC offset on amplifiers for stable operation.
  • On turntables, we re-lube bearings, replace belts, and check speed accuracy.
  • On Cassette Decks and Reel to Reels, we replace belts ( if needed ), we clean and demagnetize the heads before the alignment process ( a must ! ) 

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

  • We Avoid Cheap Parts: That $5 eBay capacitor kit? Hard pass. We use reputable brands.
  • We Don’t Over-Polish: Patina is part of the charm. We aim for “well-loved,” not “plastic surgery.”
  • We Upgrade Discreetly: If we must modernize (like adding gold-plated RCA jacks), we keep it tasteful and reversible.


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.

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All items are meticulously serviced and restored to meet factory specifications

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We pack with precision and ship in brand new, appropriately sized, boxes.

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