Marantz PM-5 Premium Integrated Amplifier | Esotec Series

The Marantz PM-5 Pre-main amplifier is capable of switching between pure class A and class AB.

In addition to pure A-class 20W/ch, AB-class 80W/ch can be switched. Moreover, in order to raise the quality of AB-class to the level of pure A-class, a high-speed high-fT transistor with a high cut-off frequency of 90 MHz is adopted in the power stage, eliminating the switching distortion that is a defect of AB-class to the limit.

The PM-5 adopts a complete push-pull DC amplifier configuration in all stages to eliminate TIM distortion from every corner of the amplifier, thereby improving the bare characteristics.
Transient cross-modulation distortion and static characteristics are improved without applying a large amount of NFB.

In order to improve the stable operation of the power transistor, a newly developed heat pipe system has been adopted for the heat radiation mechanism. Since heat is out of the circuit and cooled by a radiator, the transistor can be placed in an ideal position, simplifying the circuit and reducing distortion.

The power supply section is equipped with a large-capacity capacitor developed for audio equipment and a compact high-power transformer filled with a special resin for heat resistance.

The phono amplifier block is designed with low distortion and high S/N ratio by using transistors lavishly.
In addition, a straight DC circuit connecting the phono amplifier directly to the power stage is incorporated to improve the quality of disc playback.

In addition, the phono amplifier incorporates a high-precision MC head amplifier and subsonic circuit. The subsonic function works only for the equalizer to simplify other functions.

The tone control is adjustable by ± 8 dB from 100 Hz to 10 kHz. The balance can be adjusted independently on the left and right sides. Moreover, the use of high precision volume realizes a flat response at the midpoint of the knob.

It is also equipped with a loudness control that compensates for the low and high frequencies.

The center of the front panel is equipped with a full-scale peak power meter. Unlike bar display, both pure A class and AB class LED display power as points, so clear and accurate output can be directly read.

Under the meter, there are various functions such as a dubbing circuit that enables mutual recording from deck to deck, and a speaker selector switch that enables listening comparison between two speakers and simultaneous playback.

 

 

The Marantz PM-5 is a high-quality integrated amplifier, celebrated for its unique Class A operation option and warm, natural sound. Introduced in the early 1980s as part of Marantz's "Esotec" series, the PM-5 was designed to deliver both precision and musicality. Here’s a closer look at its technical specifications:

• Power Output: 80 watts per channel into 8 ohms in Class AB mode, with an option for 20 watts per channel in pure Class A mode. This flexibility allows you to enjoy the high-fidelity detail and warmth of Class A amplification at lower volumes.
• Frequency Response: 5 Hz to 100 kHz (+0 dB, -0.2 dB), ensuring excellent range and clarity beyond the limits of human hearing.
• Total Harmonic Distortion (THD): Less than 0.015 or Less% (Effective Output, 20 Hz to 20 kHz, 8 Ω Load), which contributes to a clean, detailed sound.
• Signal-to-Noise Ratio (SNR): 86 dB (Tape, Tuner, Aux), 86 dB (phono MM), 68 dB (phono MC) providing a quiet background for enhanced musical detail.
• Phono Stage: MM/MC compatible, allowing direct connection of both Moving Magnet (220 mv / 1khz) and Moving Coil (0.20 mv / 1khz) cartridges without an external preamp, a feature particularly valued by vinyl enthusiasts.
• Damping Factor: 100 or More (8Ω Load, 1 kHz), providing good control over speaker drivers for tight, punchy bass.
• Class A / Class AB Switching: A unique feature that lets you toggle between Class A (for more warmth and precision at lower power) and Class AB modes for higher output power.
• Inputs and Outputs: Equipped with a phono input, tuner, auxiliary, and tape monitor, plus speaker terminals for two pairs of speakers.
• Dimensions: 416 x 146 x 332 mm, making it relatively compact and easy to fit in a variety of setups.
• Weight: Approximately 13 kg (around 29 lbs), giving it a solid, substantial feel.

The Marantz PM-5 has garnered positive reviews, especially among vintage audio enthusiasts, for its refined sound quality and build. One key aspect that owners appreciate is its Class A/AB switching capability, which allows it to deliver warmer, distortion-free sound in Class A mode and more power for general listening in Class AB. Users on forums like Audiokarma praise the PM-5’s rich and smooth tonal quality, particularly noting its depth, tight bass, and silky highs. This makes it a great option for those who enjoy genres that benefit from detail and warmth, like jazz and classical music  .

 

Another appealing feature is its robust build and classic design. The PM-5 has a copper-plated chassis that reduces noise and enhances signal clarity, and its minimalist design holds up well with time, adding to its collector’s value. Audiophiles also appreciate its quality phono preamp, which supports both Moving Magnet (MM) and Moving Coil (MC) cartridges, making it versatile for vinyl enthusiasts.

Aesthetically, the PM-5 is appreciated for its vintage look and robust construction, which lends it an enduring appeal. Many users also find the Marantz “Esotec” series rare and collectible, attributing a sense of exclusivity and value to these models.

 

However, some reviews caution that although the PM-5 performs exceptionally well within its limits, it may not provide the same level of power and headroom as some modern amplifiers in higher price brackets, particularly when driving more demanding speakers. The consensus among many audiophiles is that the PM-5 shines most when used in small to medium listening spaces where its nuanced, high-quality sound can be fully appreciated. Sources:

 

• Audiokarma and other online audio forums highlight the PM-5’s respected standing among enthusiasts for its design and performance, despite occasional reservations about its power output relative to contemporary amps.

 

• Stereonomono emphasizes its versatility and appeal as a vintage piece, which is particularly valued by collectors and fans of classic Marantz gear.

 

Condition Overview:

 

• Cosmetic Condition: 8.5/10 – Excellent overall, with minimal signs of age.
• Performance: 8.5/10 – Operating at peak specifications with amazing sound clarity and depth.

 

Note: 

Our overhaul service focuses on preserving the original sonic character of the amplifier. We only replace non-functioning electronic parts, ensuring each piece remains true to its factory specifications. Unlike the common practice in many US HiFi workshops, where all capacitors, transistors, and other components are replaced, our ex-Sansui engineers and technicians advise against this, as it changes the amplifier’s authentic sound profile. We honour this approach to maintenance and restoration. However, if you’re looking for more extensive "recapping," feel free to reach out by email for a personalized service quote.

All control knobs and switches have been professionally cleaned and lubricated. However, scratchy noise cannot always be completely eliminated and may reappear over time. This is an unavoidable characteristic of vintage Hi-Fi equipment due to age and component wear. It should not be considered a defect, but rather a natural sign of the unit’s history and originality.

Please refer to our disclaimer notes for further details.

If this occurs, gently rotate the relevant control knobs (volume or balance) back and forth several times before use. In many cases, this will significantly reduce or temporarily eliminate the noise.

Please visit our YouTube channel : vintagejapanhifi_real, to enjoy audio demos of our special HiFi equipment, including vintage classics like the Micro Seiki DD-5, Sansui AU-20000, Hitachi IA-1000, and Yamaha CA-1000III. These recordings capture each piece’s unique sound profile and performance, helping you experience their quality before making a purchase.

 

You can also follow us on Instagram at vintagejapanhifi_real for the latest updates, images, and insights into our curated selection of vintage Japanese audio gear.

For any vintage audio hifi equipment:

Please be aware that, given this vintage hifi equipment's age, certain switches and original parts are no longer in production. While we’ve thoroughly cleaned and lubricated any “gari gari” scratchy controls (as they’re called in Japan), it’s simply not possible to eliminate this characteristic entirely since volume knobs and switches cannot be disassembled.

We recommend regular servicing every 2 to 3 years, depending on the equipment, to keep this vintage hifi in peak condition. This advice applies to all vintage equipment—be cautious of sellers who claim "brand-new condition" or “better than original.”

Minor scratchy sounds in control knobs are typical for vintage gear and should not be seen as a defect but rather a natural sign of its history since it does not affect the actual performance or introduce noise into the audio signal source unless being operated.

If this occurs, gently rotate the relevant control knobs (volume, or balance) back and forth several times before use. In many cases, this will significantly reduce or temporarily eliminate the noise.

For optimal sound quality, we advise pairing this amplifier with high sensitivity speakers (88-92 db). If you need guidance on amplifier matching, feel free to reach out for assistance. If you need guidance on amplifier matching, feel free to reach out for assistance.

 

Condition Note:

 

Given its age, this vintage hifi equipment remains an excellent choice, though it may show minor scratches, scuffs, or other signs of wear. Our condition ratings reflect over 20 years of expertise in vintage audio, so they’re based on both professional standards (same as audio shop) and personal experience.

 

Individual perceptions may vary, so we encourage careful review of the images provided. We’re also here to answer any questions you may have regarding the condition—please don’t hesitate to contact us for more details.

"Where audio heritage meets absolute trust”

Welcome to the ultimate destination for golden-era Japanese audio engineering. Buying premium Japan Domestic Market (JDM) hi-fi equipment online should be an exciting, seamless experience. Below, we answer our community's most frequent questions regarding voltage, restoration, shipping, and logistics to give you absolute peace of mind.

1. Restoration & Maintenance

• The Takumi Overhaul Process: Every restored component undergoes an exhaustive, archival-grade restoration by our elite Japanese Takumi technicians. This includes deep internal chassis detailing, advanced chemical treatment of all potentiometers and switches to permanently eliminate artifact noise, targeted replacement of aged or leaking capacitors, precision re-soldering of compromised micro-joints, and fresh installation of period-correct belts or bulbs. Circuitry is then meticulously re-biased to original factory specifications.
• The Endurance Bench Test: To guarantee absolute reliability before international transit, every restored unit undergoes a rigorous 24-hour stress test (operating 8 hours straight per day over 3 consecutive days) to monitor thermal stability, power delivery, and sonic purity.
• Authentic Japanese Components: We preserve the original sonic signature of your gear by utilizing premium, high-grade Japanese components—such as Nichicon, Elna, and Rubycon capacitors, and made-in-Japan transistors. To maintain absolute design integrity, certain discontinued vintage parts may be meticulously sourced from donor units of the exact same model.

2. Premium Shipping & Packaging

• Transparent Shipping Rates: Vintage components are exceptionally heavy (often weighing 20kg to over 40kg). Shipping fees are calculated accurately at checkout based on actual weight or volumetric size. Rates are tied directly to the live, official reference rates of our premium carriers (EMS, DHL, FedEx) and reflect current global carrier tariffs.
• Our Packing Standard: Every unit is engineered to survive cross-ocean journeys. We use heavy-duty, double-walled boxes and custom high-density foam molding. For turntables, heavy platters, counterweights, and headshells are completely removed and packed securely underneath the chassis to protect delicate spindles and tonearm bearings.
• Pre-Shipping Video Validation: As a mandatory final step in our workflow, every piece of equipment undergoes a meticulous, final in-house audio testing and functional bench test right before packing. We film this process and upload the high-fidelity video directly to a private Google Drive folder for your personal review before the unit departs. If any anomaly is detected, it is routed back to our workshop for final servicing at our own cost.

3. Voltage Requirements (JDM vs. International)

• The 100V Requirement: True JDM (Japan Domestic Market) audio equipment is engineered strictly for Japan’s native 100V power grid. If you live in the US (120V), Europe/UK (230V), or Australia (240V), plugging the unit directly into your wall will damage the delicate vintage circuitry.
• The Solution: Operating a 100V unit on a high-quality, isolated step-down transformer is incredibly simple, safe, and does not degrade sound quality. Our team can recommend or supply the exact wattage transformer required for your specific model to ensure perfect, lifelong operation.

4. Duties, Taxes, & Currency

• Customs and Import Taxes: International shipments are subject to the import laws, customs duties, and VAT of your destination country. These fees are the sole responsibility of the buyer and are collected by the courier upon delivery (DAP / Delivered At Place). We handle all export customs paperwork flawlessly on the Japanese side to ensure swift clearance. We do not offer DDP (Delivered Duty Paid).
• Multi-Currency Secure Checkout: Our storefront allows you to securely browse and checkout in multiple major global currencies using fully encrypted methods, including international credit cards, Apple Pay, Google Pay, and Alipay.
• Exclusive 3% Wise Discount: For maximum efficiency, we recommend utilizing Wise (Bank Transfers) for your investment. Clients opting for Wise receive an exclusive 3% privilege discount, which stacks directly on top of our ongoing 8% to 10% cross-border tariff mitigation discounts. Contact our team prior to checkout to have this applied to your invoice.

5. Workmanship Warranty & Returns

• 15-Day Workmanship Warranty: We back our elite restoration craftsmanship with a dedicated 15-day warranty. If you encounter any unexpected operational issues upon unboxing, simply notify us within 7 days of delivery. Should a component require technical attention, we will immediately collaborate with you on an efficient solution, which may involve remote diagnostics or coordinating and subsidizing support with a qualified, third-party vintage audio technician local to your area.
• 15-Day Return Window: To qualify for a return, the item must be in its exact received condition, packed securely in its original specialized materials, and pre-approved with an official Return Authorization (RA) number. Approved returns are subject to a restocking fee to cover the complex logistics of international re-importation.

For a complete, transparent breakdown of our terms, step-by-step claims instructions, and restocking details, please review our official FAQ page and different policies on Terms of Service, Return and Shipping.