Dan D’Agostino - Relentless 800 - Monoblock Amplifier

The Dan D’Agostino Relentless 800 Monoblock Amplifier extends the engineering platform and sonic character of the flagship Relentless Epic amplifiers into a more compact, yet still uncompromising, reference-grade design. Engineered for absolute loudspeaker control and extraordinary dynamic realism, the Relentless 800 delivers immense current capability while preserving the refinement, tonal accuracy, and transparency expected from the company’s highest-performance products.

Every major section of the amplifier — including the power supply, input, driver, and output stages — has been extensively refined using technologies derived directly from the Relentless Epic 1600 platform. A nearly four-kilowatt transformer and 400,000μF capacitor bank provide staggering current reserves, while fully complementary balanced circuitry and Super Rail topology improve transient response, bandwidth, and overall amplifier stability under demanding loads.

Advanced thermal management is achieved through Dan D’Agostino’s signature copper and aluminum venturi-style heatsink system, allowing greater Class A operation and long-term reliability. Finished in a precision-machined aluminum chassis with the company’s iconic oversized analog meter display, the Relentless 800 is engineered as a true statement-level monaural amplifier for reference music systems.

Available in Silver or Black finishes

FEATURES

• Reference fully balanced monaural amplifier design
• 800W continuous output into 8 ohms
• 1600W continuous output into 4 ohms
• 3200W continuous output into 2 ohms
• Nearly 4kW transformer power supply
• 400,000μF capacitor bank
• 84 matched high-current output transistors
• Super Rail amplifier topology
• Fully complementary discrete circuitry
• Current-domain gain stage architecture
• No global negative feedback
• Enhanced Class A operating region
• Copper and aluminum venturi-style heatsink system
• Single balanced XLR input
• Custom gold-plated speaker binding posts
• Advanced thermal, short-circuit, and DC protection systems
• Precision-machined solid aluminum chassis construction
• Swiss watch-inspired analog power meter
• Hand-built in the USA

SPECIFICATIONS

Type: Monaural Power Amplifier
Amplifier Class: Class AB
Output Power: 800W @ 8Ω / 1600W @ 4Ω / 3200W @ 2Ω
Frequency Response: 0.1Hz – 100kHz (+0/-3dB) / 20Hz – 20kHz ±0.1dB
Signal-to-Noise Ratio: >80dB A-weighted / >113dB unweighted
Total Harmonic Distortion: 0.1% @ 1kHz, 800W @ 8Ω
Input Impedance: 100kΩ
Inputs: 1 x Balanced XLR
Outputs: 1 Pair Speaker Binding Posts
Dimensions (W × H × D): 21.6 × 10.4 × 26.0 in. (54.9 × 26.4 × 66.0 cm)
Weight: 320 lbs (145 kg)
Finishes: Silver or Black