Beware Of Counterfeit Or Inferior LM Copies. LM has been able to purchase and verify these Counterfeits. Also, the 220v models made for the Chinese market are reduced quality and therefore cost. We receive the superior and more expensive models which are not sold in China. We only sell authorized 120v export models with local support and full warranty.
The LM 503PA mono blocks uses a single ended 845 output stage with Full Music 300B drivers. Pre-amplifier stage use a special Line Magnetic tube, the 310A.
The rectifier tube is a 5U3C and the power line is filtered by two special chokes. User bias controls for 300B and 845 are used for bias adjustment with a specific vu meter to allow you to monitor bias with ease.
The matching LM 512CA Preamplifier is listed separately. Photo shows all matching units together.
Priced Per Pair.
– Single ended design
– Pure class A
– Point-to-point wiring
– High quality components
Input stage: 1x 310A
Rectifier: 1x 5U3C
Drivers: 1x 300B
Power stage: 1x 845 “Single-ended” and Class A amplifier
Output power:24W ( RMS ) single-ended Class A
Output impedance: 4Ω, 8Ω, 16Ω
Inputs: 1x RCA, 1x XLR per stage
Input sensitivity :1000 mV
Input impedance: 100 kΩ
Frequency range: 15Hz to 35 kHz, -1.5dB
Harmonic Distortion THD: 1% (1kHz)
S/N ratio: 87 dB
Vacuum Tube set: 1x 845 LM, 1x 300B FM, 1x 310A LM, 1x 5U3C
Power supply: 120v/60Hz
Power consumption: 290 W per stage
Dimensions: 287×574×279mm (W×D×H)
Weight: 32 kg