Line Magnetic LM-33LP silver

MM/MC Tube Phono Preamp: Line Magnetic LM-33LP

The Line Magnetic LM-33LP is a phono preamplifier for turntables, specially designed to amplify the signal from a turntable’s cartridge, whether it’s a moving magnet (MM) or moving coil (MC) cartridge, before it reaches the main amplifier.

Design and Construction

The LM-33LP is a tube phono preamplifier, using three ECC803S tubes for the final signal amplification. The use of tubes in the amplification process is renowned for adding a warm and rich character to the sound, which appeals to many audiophiles and music lovers.

One of the key design features of the LM-33LP is the separation of the power supply from the phono preamp’s output stage. This design choice helps prevent and reduce interference between them, ensuring a cleaner and more accurate sound reproduction.

High-Quality Components

The LM-33LP is built with high-quality components to ensure the best possible performance. It uses German Mcap coupling capacitors and Japanese Nichicon & Rubycon filter capacitors. These components are known for their reliability and superior performance in audio applications.

Versatility and Control

The LM-33LP is an extremely versatile unit that works with both MM and MC cartridges, making it suitable for a wide range of turntables. It also features separate outputs for cartridge type and a selector for low or high output. This allows you to fine-tune the preamp to match your specific turntable and cartridge for optimal performance.

Key Benefits

• Warm and rich sound thanks to the use of tubes in the amplification process
• Versatility to work with both MM and MC cartridges
• Separate power supply and output stage for cleaner sound reproduction
• High-quality components for reliable performance
• Separate outputs for cartridge type and a selector for low or high output
• Compact and elegant design with a silver finish

Technical Specifications

Electronic Configuration

• 3 ECC803S tubes

Audio Performance

• Frequency response: 20 Hz - 20 kHz (± 1.5 dB)
• Total Harmonic Distortion (THD): 0.15% (1 kHz)

Signal-to-Noise Ratio

• Moving Coil (MC) mode: 60 dB
• Moving Magnet (MM) mode: 70 dB

Input Sensitivity

• Moving Coil (MC)
  • High position: 1 mV
  • Low position: 0.5 mV
• Moving Magnet (MM): 6 mV

Gain

• Moving Magnet (MM): 50 dB
• Moving Coil (MC)
  • High position: 1 mV
  • Low position: 0.5 mV

Impedances

• Moving Coil (MC) input
  • High position: 100 Ω
  • Low position: 47 Ω
• Moving Magnet (MM) input: 50 kΩ
• Output: 10 kΩ

Physical Characteristics

Dimensions

• Preamplifier: 302 × 131 × 139 mm (W × D × H)
• Power supply: 170 × 113 × 81 mm (W × D × H)

Weight

• Net: 6.5 kg
• Gross: 8 kg

Power Supply

• Power consumption: 20 W

Warranty

• Device: 2 years parts and labor
• Tubes: 6 months
• Non-transferable, reserved for the original purchaser