Analog Sound™ by Line Magnetic AS-133 Preamplifier

$9,500.00

The Analog Sound™ AS-133 is a high-quality preamplifier that combines Western Electric’s legendary circuitry with a versatile design, making it compatible with a wide range of power amplifiers.

Utilizing premium triode tubes (6SN7 and 2A3) and Western Electric Replica 618 input transformers, the AS-133 offers an exceptional audio experience with customizable settings for optimal sound quality. Its unique circuit design, gain settings, and precision volume control make it a top choice for audiophiles seeking superior sound and flexibility in their high-end audio systems.

Made to Australian standard of 240V~.

This product is made-to-order and has a lead time of ~3 months.

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Made to Australian standard of 240V~.

This product is made-to-order and has a lead time of ~3 months.

Made to Australian standard of 240V~.

This product is made-to-order and has a lead time of ~3 months.

Main Features

Premium Triode Tubes for Superior Sound Quality

The AS-133 uses two renowned triode tubes, 6SN7 and 2A3, which are rarely found in tube pre-amps. While most pre-amps use smaller 9-pin tubes like the 12AX7, the AS-133’s inclusion of larger, direct-heated triodes (2A3) offers enhanced tonal control, a spacious soundstage, extended high frequencies, and a rich, full-bodied midrange.

Enhanced Low-End Depth with Tube Rectifier
A 5U4G tube rectifier provides deep bass and additional warmth, enhancing the overall tube sound profile. For flexibility, it can be replaced with a 274B or NOS U52 tube type, allowing users to further customize the sound.

Front Meter for Monitoring Tube Health
The pre-amp’s front panel includes a meter that monitors the status of each 6SN7 tube, ensuring aging tubes are replaced on time to keep the amplifier in optimal condition.

Western Electric Replica 618 Input Transformers
To deliver a fully balanced input stage, the AS-133 incorporates replica Western Electric 618 transformers. These transformers are renowned for their unmatched sonic quality, and despite their vintage origins, they remain a favourite among audiophiles for their exceptional performance.

Advanced Circuit Design with High-Frequency Response
The AS-133’s circuit design achieves an upper frequency response of nearly 1 MHz, creating an unparalleled audio experience. This feature, combined with six selectable gain settings (2.5dB, 5dB, 7.5dB, 10dB, 12.5dB, and 15dB) makes the AS-133 more versatile than typical tube pre-amps, which often have a fixed gain setting.

Precision Volume Control and Adjustable Input Gain
The 20-step output volume control works in combination with the six gain settings, providing almost endless adjustment possibilities to suit any musical preference or system configuration. Users can manually adjust input gain or use the included remote control, with settings ranging from mute to full volume.

Specification

Input Impedance: 100kΩ/ 600Ω

Output Impedance: 50KΩ

Sensitivity: 1V

Gain: 15dB, 12.5dB, 10dB, 7.5dB, 5dB, 2.5dB

Signal to Noise Ratio: > 90dB

Frequency Response: 10Hz to 98KHz +/-3dB

THD: 0.3%

Tube complement: 2x 6SN7, 2x 2A3, 1x 5U4G

Connections: 1x XLR balance input, 3x RCA inputs, 2x RCA outputs

Dimension (W x H x D): 485mm × 240mm × 460mm

Net weight: 22Kg