Marantz MA700 Manual

The Marantz MA700 is a high-performance monoblock power amplifier designed for audiophile-grade audio systems. Featuring advanced amplification technology, robust construction, and premium components, the MA700 delivers exceptional sound quality with low distortion and high power output. Below are key sections covering features, installation, operation, specifications, and maintenance.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Connections 6. System Integration 7. Operation Guidelines 8. Maintenance & Care 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: High-current power supply, premium audio capacitors, gold-plated connectors, thermal protection circuit, and vibration-resistant chassis.

Feature	Description
Power Output	200 watts RMS into 8 ohms
Input Connectors	RCA and XLR balanced inputs
Speaker Terminals	Gold-plated binding posts
Power Supply	Toroidal transformer with high-current capacity
Protection Circuits	Thermal, short-circuit, and DC offset protection
Frequency Response	10Hz - 100kHz (+0/-3dB)
Signal-to-Noise Ratio	>110dB
Total Harmonic Distortion	<0.05% at rated power
Power Requirements	120V AC, 60Hz
Dimensions	17" W x 6" H x 15" D

Installation

Unpack and inspect contents. Place on stable, level surface with adequate ventilation.

Position amplifier: Ensure at least 6 inches clearance on all sides for proper ventilation.
Connect audio input: Use high-quality RCA or XLR cables from preamplifier to MA700 input.
Connect speakers: Use appropriate gauge speaker wire to gold-plated binding posts.
Connect power: Plug into dedicated AC outlet; avoid power strips if possible.
Ground connection: Ensure proper grounding for optimal performance.

WARNING! Amplifier generates heat during operation; ensure adequate ventilation. Use two people for handling due to weight.

First-Time Setup

Power on amplifier following proper sequence to avoid damage.

Power sequence: Turn on source components first, then preamplifier, finally MA700 amplifier.
Input selection: Ensure proper input source is selected on preamplifier.
Volume control: Start with volume at minimum and gradually increase.
System check: Verify all connections are secure and proper operation.
Break-in period: Allow 50 hours of operation for optimal performance.

CAUTION! Always use proper power sequence to prevent speaker damage. Do not operate without proper load.

Specifications

Power Output: 200W RMS into 8Ω, 350W into 4Ω
Input Sensitivity: 1.2V for rated output
Input Impedance: 47kΩ (RCA), 20kΩ (XLR)
Damping Factor: >400 at 8Ω
Slew Rate: 50V/μs
Power Consumption: 600W maximum
Standby Power: <1W
Operating Temperature: 41°F to 95°F (5°C to 35°C)
Weight: 35 lbs (15.9 kg)
Warranty: 3 years limited

Controls and Connections

Front Panel: Power switch, status LED. Rear Panel: Input connectors, speaker terminals, AC inlet.

Input Selection: RCA unbalanced or XLR balanced inputs (auto-detection).

Speaker Connections: Gold-plated binding posts accept bare wire, spade lugs, or banana plugs.

Status Indicators: Power LED (blue - normal operation, red - protection mode).

Protection Circuits: Thermal shutdown, short-circuit protection, DC offset detection.

System Integration

Compatible with Marantz preamplifiers and various audio sources.

Stereo system: Use two MA700 amplifiers for bi-amplification.
Home theater: Integrate with AV processors for multi-channel systems.
Source compatibility: Works with CD players, turntables (with phono preamp), streamers.
Cable recommendations: Use high-quality interconnects and speaker cables.

Tip: For best performance, use matched Marantz components and quality cables.

Operation Guidelines

Proper operation ensures optimal performance and longevity.

Power sequence: Always power on sources first, amplifier last.
Volume control: Avoid extreme volume levels that cause distortion.
Input selection: Ensure proper input source matching.
Ventilation: Maintain adequate airflow around amplifier.
Protection modes: If protection activates, identify and resolve cause before reset.
Standby operation: Power off when not in use for extended periods.
Performance monitoring: Listen for any abnormal sounds or behavior.

WARNING! Do not operate with impedance loads below specified minimum. Avoid moisture and extreme temperatures.

Maintenance & Care

Unplug before cleaning. Use soft, dry cloth for exterior; compressed air for vents.

Regular Maintenance:

Clean exterior surfaces monthly
Check connections for tightness
Ensure ventilation paths are clear
Inspect cables for damage

CAUTION! Do not use liquid cleaners. Never open chassis - no user-serviceable parts inside.

Regulatory Information

FCC Part 15: Class B digital device compliant. CE marked for European compliance. RoHS compliant. Copyright © 2025 Marantz; trademarks of Sound United LLC. For technical support, visit www.marantz.com or contact 1-800-288-2772.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord, outlet, switch	Check power cord connection; verify outlet function; ensure power switch is on.
Protection mode active	Overheating, short circuit	Allow cooling; check speaker wires for shorts; reduce volume.
No sound	Input connections, source	Verify input connections; check source component; ensure proper input selection.
Distorted sound	Overload, damaged cables	Reduce volume level; inspect cables for damage; check source quality.
Hum or noise	Ground loops, cable issues	Check grounding; use balanced connections; replace damaged cables.

Reset: Power cycle amplifier. If issues persist, contact service.

Service: 1-800-288-2772; www.marantz.com