Mono Power Amplifier

The LM-212PA mono power amplifier is Line Magnetic’s flagship, using a massive 212 tube in a single ended design and complete with an ingenious lifting/retracting function that protects the tube for accidental damage when not in use.

The input stage tube is a 310A, specially manufactured for and by Line Magnetic. Rectification is performed by a 274B and a 300B works as the driver tube.

Nothing but top grade components are used in the LM-212PA mono power amplifier, such as American RTX Multicap capacitors, Danish Jensen capacitors, German Mundorf MCap capacitors, NCC capacitors, Nichicon capacitors, Kiwame capacitors, a Motorola high current rectifier bridge and Panasonic relays.

Bias for the 212 tube is easily adjusted using the top mounted ampere meter. The 300B driver bias is controlled by an auto-bias circuit and does not need to be adjusted.

Some Highlights
– Single-ended design
– Class A amplifier
– Point-to-point wiring
– High quality components

Tubes used in this amplifier
Input stage: 1x 310A
Driver: 1x 300B
Rectifier: 1x 274B
Power stage: 1x 212

Features
Hand-made construction with the finest point-to-point wiring
SoftStart and time-delay circuit – 30 seconds
Specially designed EI transformers for power supply and output
212 tube protection mechanism

Tubes supplied Common replacements
300B 300A, 4300B
310A Soviet Union/om12C, WE310A
274B 5R4GY, 5X4G
212 ML-212E

Specifications
Class A amplifier – 1x32W
THD: 1% (1kHz)
Signal/Noise ratio: 87dB
Frequency response: 15-35,000 Hz (-1.5 dB)
Sensitivity: 1000 mV
Input Impedance: 100KΩ (RCA), 600Ω (XLR)
Load impedance: 4/8/16Ω

Connectors
2x Line input RCA
1x Line input XLR
1x Screw terminals compatible with banana plugs

Dimensions: W 300 x H 600 x D 575 mm
Weight: 60 Kg
Finish: Silver