Sansui BA-5000 Solid State Power Amplifier
Best high-power amplifier for vintage audio enthusiasts seeking reliable performance.
Rediscover the power of vintage audio with the Sansui BA-5000 Solid State Power Amplifier, a legendary piece from 1975-1977. This amplifier, in excellent 9/10 condition, has undergone a comprehensive 30-point service check. It delivers a robust 300 watts per channel minimum RMS output into 8 ohms, ensuring an immersive listening experience. Its advanced high-efficiency output transformer guarantees stable operation across various impedance loads and acts as a subsonic filter for speaker protection.
$5000.00
Owner Satisfaction
4.7
/ 5
Category Rank
421
/ 1688
#421 in Power Amplifiers
Price vs Category Average
-39%
Below average
Type
Solid State Power Amplifier
/ Solid State Power Amplifier
Who it's for
- Listeners seeking a warm, authoritative, and fatigue-free sound
- Audiophiles driving demanding, power-hungry speaker systems
- Vintage collectors valuing iconic 1970s industrial design
Who should skip it
- Budget-conscious shoppers preferring modern, cost-effective amplification
- Buyers avoiding complex, expensive, and time-consuming electronic restoration
- Users with limited shelf space or poor ventilation
Performance breakdown
Power Output
Massive 300-watt delivery handles even the most demanding vintage speaker loads.
Build Integrity
Heavy-duty construction reflects the legendary over-engineered standards of the seventies.
Impedance Versatility
Stable operation across varying loads ensures consistent performance with diverse setups.
Signal Clarity
High signal-to-noise ratio maintains clean audio reproduction for critical listening.
Operational Flexibility
Bridgeable mono mode provides significant headroom for high-end audio configurations.
Maintenance Status
Comprehensive servicing ensures reliable operation for modern daily use.
Key Specs
Type
Solid State Power Amplifier
Power Output
300 watts per channel into 8Ω (stereo), 600 watts into 8Ω (mono)
Frequency Response
15Hz to 30kHz
Total Harmonic Distortion
0.1%
Damping Factor
10
Input Sensitivity
0.7V
Signal to Noise Ratio
100dB
Speaker Load Impedance
2Ω to 8Ω
Features
- Delivers 300 watts per channel RMS output
- Stable 2, 4, or 8-ohm operation
- Functions as a bandpass filter
- Capable of 600 watts in mono mode
- Flexible stereo or mono operation
- Fully serviced and cleaned controls
- Vintage 1970s model
- High-efficiency output transformer
What customers say
The Sansui BA-5000 earns near universal praise for its legendary performance and uncompromising build quality. Owners consistently highlight the amplifier's immense, effortless power, delivering 300 watts per channel with authoritative control over demanding speakers. The sonic signature is powerful, detailed, and musical, offering pleasing warmth without harshness. Aesthetically, the massive chassis and iconic illuminated VU meters make it a true showpiece of vintage high fidelity. While optimal performance often requires professional restoration due to age, this investment is viewed as a prerequisite for owning a classic. Once serviced, the BA-5000 is considered exceptionally reliable, offering reference level power and holding its value remarkably well for serious audiophiles.
Know before you buy
This BA-5000 has completed a comprehensive 30-point service check. All controls have been professionally cleaned and the unit has been fully serviced to ensure it meets its original performance specifications.
Yes, this amplifier is designed for stable operation across 2, 4, and 8-ohm loads. Its high-efficiency output transformer ensures consistent performance even when driving more demanding speaker configurations.
The BA-5000 is bridgeable, allowing you to switch it into mono mode. In this configuration, it delivers a massive 600 watts into an 8-ohm load, providing significant headroom for high-power audio setups.
The high-efficiency output transformer serves two primary functions: it ensures stable power delivery across varying impedance loads and acts as a subsonic filter to protect your speakers from low-frequency distortion.
At 108 lbs, this amplifier is exceptionally heavy and requires a sturdy, well-ventilated surface. Ensure your rack or stand is rated to support its weight and dimensions of 19"W x 8.75"H x 18.5"D.
The BA-5000 features standard RCA inputs with an input sensitivity of 0.7V. It is compatible with most vintage and modern preamplifiers that provide a standard line-level output.
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$5000