Sansui AU-888
Prologue: This mint condition Sansui AU-888 (JDM / Japan Domestic Market model at 100V) has gone through Master-grade 'Takumi' Restoration performed here in Japan. Sound signature preserved to original 1970s factory specifications by veteran Sansui technicians here in Fukuoka.
The original wooden cabinet has also been carefully repaired, refinished, and repainted in-house by hand here at VintageJapanHiFi, respecting the grain, the weight, and the passage of time. This entire restoration work takes two to three months, allowing the amplifier to settle naturally, as it should. What remains is not merely an amplifier, but a piece of Japanese monozukuri—quiet, enduring, and made to be lived with.
It will reward its owner with many unhurried hours of listening, where music is allowed to breathe.
Background: The Sansui AU-888 just sits just below the AU-999 in Sansui’s early ’70s lineup and shares much of its circuit philosophy. Rated at ≈45W per channel into 8Ω, it delivers the warm-but-articulate Sansui house sound prized for jazz, soul, and classic rock listening. Inside, Sansui used a dual-differential, direct-coupled power amp with ± dual rails and complementary Darlington outputs, aiming for low distortion, strong damping, and clean bass control—hallmarks that helped this series earn its reputation among collectors.
The preamp section favours low-noise PNP silicon transistors, with thoughtful parts selection (limited coupling caps, Mylar bypassing) to preserve high-frequency clarity. Day-to-day usability is excellent thanks to A/B/C speaker switching, flexible tone contouring, and multiple phono/line inputs.
Renowned for its robust build and warm, dynamic sound signature, the AU-888 remains a favourite among vintage audio enthusiasts seeking reliable and high-quality analog performance.
Inside, the AU-888 features a dual differential, direct-coupled amplifier design with complementary Darlington outputs, giving it excellent control, low distortion, and tight bass. The preamp section uses low-noise PNP silicon transistors, while Sansui’s careful parts selection—minimal coupling capacitors, Mylar bypass caps—preserves high-frequency clarity and natural tonal balance.
One of the AU-888’s highlights is its Triple Tone Control (Bass, Mid, Treble) with selectable midrange frequencies, plus loudness compensation and high/low filters for flexible listening. It also allows independent preamp and power amp use, making it versatile for more advanced system setups.
Built with 41 transistors, 12 diodes, and 2 SCRs, and weighing a solid 12.6kg, the AU-888 reflects Sansui’s dedication to reliability and craftsmanship. Collectors and audiophiles consistently praise it for its musical midrange, smooth highs, and engaging presentation—a slightly lower-powered but equally refined sibling to the legendary AU-999.
The key design features of the Sansui AU-888 include:
- 2-Stage Differential Amplifier & Direct Coupling: The main amplifier uses a sophisticated dual differential-amplifier circuit, coupled directly (without capacitors) and featuring a complementary Darlington circuit system. This design ensures consistent output, stable damping, and reduced distortion across the entire audio range, especially at low frequencies.
- Triple Tone Control (TTC): Separate Bass, Midrange, and Treble controls for highly precise sound tailoring, along with selectable midrange frequencies for flexible tone shaping.
- High-Quality Components: Extensive use of low-noise PNP silicon transistors in the preamp, direct-coupled circuits, and Mylar capacitors for improved frequency response and reduced noise.
- Modular Pre/Main Sections: The preamplifier and main amplifier can be separated for use in expanding or customizing your audio system, such as bi-amping or servicing.
- Protective Features: Advanced protection circuits with speaker relay and multiple fast-acting fuses keep both the amplifier and your speakers safe from damage due to electrical faults.
- Versatile Input/Output: Multiple phono, microphone, tuner, auxiliary, tape, and headphone inputs, with robust speaker switching options (supports three parallel speaker pairs).
- Filters & Convenience: Includes high/low frequency filters, loudness switch, muting switch, and headphone jack for flexible operation
- Type: Stereo Pre-Main amplifier
- Power Output: 45W + 45W (8Ω), 55W + 55W (4Ω)
- Total Harmonic Distortion (THD): ≤ 0.4% (rated output)
- Intermodulation Distortion (IMD): ≤ 0.4% (SMPTE, 60Hz:7kHz = 4:1)
- Frequency Response: 10Hz – 70kHz (±1dB)
- Power Bandwidth: 10Hz – 40kHz (8Ω)
- Channel Separation: ≥ 50dB (1kHz, rated output)
- Signal-to-Noise Ratio (IHF): ≥ 100dB (power amp); ≥ 80–85dB (phono/aux)
- Input Sensitivity / Impedance: Main: 1V / 50kΩ, Phono 1: 2mV / 50kΩ, Phono 2: 2mV / selectable 30kΩ / 50kΩ / 100kΩ, AUX / Tuner: 180mV / 100kΩ
- Damping Factor: 20 (8Ω load)
- Load Impedance Range: 4Ω – 16Ω
- Preamplifier Output Voltage: Max 4V, Rated 1V
- Preamplifier THD: 0.1% (rated output voltage)
- Preamplifier Frequency Response: 15Hz – 50kHz (+0.5 / –1.5dB)
- Tone Controls: Bass: ±12dB at 20Hz (2dB steps), Midrange: ±5dB at 1kHz / 2kHz (1dB steps), Treble: ±12dB at 20kHz (2dB steps)
- Loudness Compensation: +8dB (50Hz), +3dB (10kHz)
- Filters & Switching: High Filter: 10kHz, –8dB (12dB/oct), Low Filter: 50Hz, –8dB (12dB/oct), Muting: –20dB
- Special Features: Preamp and power amp separable, extensive protection circuits, triple tone controls
- Power Supply: 100V AC, 50/60Hz
- Power Consumption: 400W max
- Dimensions (W × H × D): 460 × 140 × 305 mm
- Weight: 12.6 kg
Here are insights on the Sansui AU-888 from various audiophile forums:
- Sound and Musicality: Users describe the AU-888 as “fantastic,” delivering a lush, warm, and highly musical sound. After restoration and using quality modern components, many find it “very, very hard to pick any difference” between the AU-888 and its highly regarded sibling, the AU-999—with some suggesting the 888 might “nudge ahead” in pure listening pleasure on memory alone.
- Genre Suitability: The AU-888 receives frequent praise for jazz, blues, soul, and rock music, where its punchy and engaging signature stands out. Several forum posters describe its performance as “excellent for your jazz/blues, soul, and really tight rock.” Its reputation among enthusiasts is particularly strong for these genres, thanks to its dynamic midrange and satisfying drive.
- Build and Looks: Audiophiles express affection for both the vintage sound and the physical aesthetics (“I love the look and sound of AU-888”), appreciating its retro design and sturdy build as a highlight in their systems.
- Comparisons: Forum posters note differences (and similarities) between the AU-888 and other Sansui amps, such as the AU-999 and AU-777, often stating preference for the AU-888’s unique “tonal characteristics” and vintage Sansui “lushness.” While some newer Sansui models offer more outright detail and top-end clarity, the older 888 is praised for its intoxicating, “lusher” presentation.
- Restoration and Upgrades: Many AU-888 owners on forums have restored or recapped their units, replacing old capacitors and addressing aging transistors. This effort is widely seen as worthwhile, with listeners noting that a restored AU-888 “sounds great afterwards,” and is “as good as any Sansui I’ve ever worked on or seen”.
Overall, the Sansui AU-888 is beloved in audiophile communities for its musicality, genre versatility, classic looks, and rewarding ownership experience—especially when fully serviced and matched with quality speakers.
This vintage Sansui AU-88 has undergone a meticulous, master craftsman-level restoration, with a complete professional overhaul both inside and out.
Since its return, the amplifier has been rigorously tested over a two-week period at Vintage Japan HiFi. Thanks to the painstaking restoration, it now delivers a musical midrange, smooth highs and engaging presentation - has the ability to handle both jazz and rock recordings with equal finesse.
The original wood case has been carefully restored in-house over a two-week process. Each surface was hand-sanded to remove scratches, with peeled or cracked areas carefully patched. The finish was then revarnished using a meticulous combination of oil coating and water-grinding techniques, bringing back its rich and natural lustre (deep dark walnut colour) while preserving its vintage character.
Condition Overview:
- Cosmetic Condition: 9.0/10 — Mint condition, representing one of the finest examples we have encountered. The front, back, sides, and top panels are exceptionally clean, free from any visible scratches or blemishes. This unit comes with protective seal covers on the RCA connectors on the back panel.
- Wooden case : 8.5 /10 — it has been beautifully restored to highlight its natural wood grain. Most scratches and cracks have been carefully repaired and the finish now carries a rich, deep walnut tone that enhances its vintage character.
- Performance: 9.0/10 — Operating flawlessly at peak specifications. The amplifier’s standout qualities are its musical midrange, smooth highs and engaging presentation
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
You’ll find audio tests and demos from our carefully curated collection of vintage Japanese HiFi.
Enjoy the sound, and don’t forget to subscribe to stay updated with our latest uploads!
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.
"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.