Acoustic Research ETL 1

The Acoustic Research ETL-1 is a high-end belt-drive turntable from AR's Connoisseur Series, produced in the late 1980s. It represents one of the most refined models in the Acoustic Research lineup, designed for audiophiles seeking precision and low noise.

Technical Overview

Drive and Motor:

• Belt drive system with electronic speed control for precise and stable rotation.

• Uses a high-pole synchronous motor.

• Speeds supported: 33⅓ and 45 rpm.

Platter and Bearing:

• Heavy 8.5 lb (approximately 3.85 kg) platter for improved rotational inertia and speed stability.

• Sapphire bearing for smooth, low-friction platter rotation.

Suspension:

• 3-point dual spring suspension system with adjustable weights.

• Adjustable feet for leveling and isolation.

• This suspension design provides excellent isolation from external vibrations, reducing noise and resonance.

Performance:

• Wow and flutter rated at an excellent 0.03%, indicating very high speed accuracy.

• Rumble rated at -81 dB, reflecting very low background noise during playback.

Construction and Finish:

• Available in Cherry wood finish or Piano Black.

• Dimensions: approximately 20.44" wide x 7.5" high x 17.5" deep with dust cover down.

• Weight: about 29 lbs (13.15 kg).

• The turntable was sold without a tonearm, allowing users to fit their preferred arm.

Additional Notes:

• The ETL-1 is a fully manual turntable.

• Its electronic speed control and heavy platter contribute to superior speed stability compared to earlier AR models.

• The dual spring suspension and sapphire bearing enhance smoothness and reduce mechanical noise.

• It is considered an upgrade over earlier AR models like the ES-1 and "The AR Turntable," offering improved isolation and quieter operation.

• The ETL-1 commands respect among vintage turntable enthusiasts for its build quality and sound performance.