ACCUSTIC ARTS Mono IV Amplifier
Best reference-grade mono amplifier for uncompromising high-end audio enthusiasts.
Experience unparalleled audio performance with the Accustic Arts MONO IV, a reference-class mono power amplifier engineered for discerning audiophiles. This amplifier delivers exceptional power reserves through 20 selected MOS-FET output transistors and two premium toroidal transformers. Its robust design features over 80,000 µF of power supply capacity for optimal smoothing and a high damping factor for precise speaker control. With versatile balanced (XLR) and unbalanced (RCA) inputs, it integrates seamlessly into high-end audio systems. Housed in a stable, resonance-optimized aluminum chassis with a polished brass inlay, it embodies sonic purity and aesthetic elegance, proudly Handmade in Germany.
$69990.00
More Mono Options
Owner Satisfaction
4.8
/ 5
Category Rank
38
/ 2553
#38 in Power Amplifiers
Price vs Category Average
+748%
Above average
Voltage Gain
30.0
/ dB
Who it's for
- Purists prioritizing maximum channel separation and premium build quality
- Audiophiles driving demanding, low-impedance loudspeaker systems
- Listeners seeking pure, uncolored, and highly detailed musical reproduction
Who should skip it
- Owners with small, poorly ventilated, or heat-sensitive listening rooms
- Budget-conscious buyers seeking entry-level or mid-range amplification
- Users with limited rack space or restricted room layouts
Performance breakdown
Power Reserves
Massive output capacity effortlessly drives even the most demanding speaker loads.
Signal Purity
Ultra-low distortion levels ensure a transparent and highly accurate sonic reproduction.
Build Integrity
Resonance-optimized aluminum housing reflects uncompromising German engineering and industrial craftsmanship.
Speaker Control
High damping factor provides tight, authoritative grip over low-frequency driver movement.
System Integration
Flexible XLR and RCA inputs accommodate a wide range of high-end preamplifiers.
Thermal Stability
Dual toroidal transformers maintain consistent performance during extended, high-volume listening sessions.
Key Specs
Voltage Gain
30.0 dB
Power Supply Capacity
more than 80,000 µF
Input Resistance
Balanced (XLR): 2 x 20 kΩ, Unbalanced (RCA/Cinch): 100 kΩ
Rated Power Output
approx. 900 watts @ 2 Ω, approx. 760 watts @ 4 Ω, Maximum 510 watts @ 8 Ω
Signal to Noise Ratio
-96 dBA (ref. 6.325 V)
Intermodulation Distortion
0.007 % with 10 watts on 4 Ω
Distortion (THD+N)
0.004 % on 4 Ω load with 1 kHz & 10 watts
Dimensions (H x W x D)
13.4" x 18.5" x 17.3"
Features
- Reference Class Mono Power Amplifier
- 20 selected MOS-FET output transistors
- Dual magnetically shielded toroidal transformers
- High damping factor for precise speaker control
- Switchable balanced (XLR) and unbalanced (RCA) inputs
- WBT loudspeaker terminals for secure connections
- Resonance-optimized aluminum housing with brass inlay
- Handmade in Germany
What customers say
Owners consistently praise the ACCUSTIC ARTS Mono IV Amplifier for its exceptional sonic transparency and neutrality. This reference grade component delivers immense power, acting as a pure conduit for the source material without audible coloration. A key highlight is its effortless ability to drive demanding loudspeakers, offering remarkable control, especially in deep, taut, and highly defined low frequencies. Users celebrate the superb resolution, which creates a vast, holographic soundstage with precise instrument placement and natural timbre. Beyond performance, the robust German engineering and premium build quality receive universal acclaim. While the investment is substantial, customers view the Mono IV as an endgame purchase, believing the authoritative musical experience justifies the cost, leading to extremely high satisfaction.
Know before you buy
The MONO IV is designed to handle demanding speaker loads with ease. Its high power output—reaching 900 watts at 2 ohms—and high damping factor ensure it maintains precise control over even the most difficult-to-drive loudspeakers.
Yes, the amplifier features switchable inputs that accommodate both balanced (XLR) and unbalanced (RCA) connections, allowing it to integrate into a wide variety of high-end audio setups.
The amplifier utilizes two premium toroidal transformers and over 80,000 µF of power supply capacity. This robust architecture ensures a stable, clean current flow, which is essential for maintaining sonic purity and dynamic headroom during complex musical passages.
The use of 20 selected MOS-FET transistors allows the amplifier to deliver high current and exceptional linearity. This specific component choice is a hallmark of the Accustic Arts sound, providing a refined, detailed performance that remains stable under heavy loads.
Each unit measures 13.4 inches high, 18.5 inches wide, and 17.3 inches deep. Given its weight of approximately 93 pounds, ensure your shelving or rack is rated to support significant mass and provides adequate ventilation for the chassis.
Yes, every MONO IV is handmade in Germany. This includes the assembly of the resonance-optimized aluminum housing and the precise integration of the internal components.
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