Product Introduction

LM-170IA is a high-performance Class AB ultra-linear push-pull tube Vacuum Tube Integrated Amplifier, handcrafted with precision point-to-point wiring to preserve signal purity and ensure long-term reliability. Its power stage features four Russian KT170 vacuum tubes in ultra-linear push-pull configuration, driven via 6SN7 cathode-coupled circuitry, with 6922 and ECC82 tubes delivering accurate, nuanced voltage amplification.

the amplifier employs an EI 133*80 iron-core power transformer for abundant, stable power even under high-dynamic conditions, paired with an 

114*55 iron-core output transformer that boosts signal conversion efficiency and extends frequency response. It offers comprehensive 

connectivity: three RCA inputs, balanced input, pure power-stage input, and a dedicated auxiliary subwoofer output

- high-grade Japanese ALPS potentiometer is applied.

- Inter-stage coupling capacitors use high-quality German Mundorf (Mcap) capacitors.

- Imported Russian vacuum tubes, ensuring stable and reliable performance.

- Dedicated auxiliary subwoofer output.

- Dedicated pre-amplifier output circuit, independently output via V6 (6922).

- The power amplifier stage uses 4 Russian KT170 vacuum tubes for Class AB push-pull power amplification.

- External KT170 current adjustment (BIAS ADJ.), with pointer-type level indication and power tube static current detection function.

- Infrared remote control, with volume control and mute function.

- Power transformer applied EI 133*80 high-quality iron core, ensuring abundant and stable power supply under large dynamic operation.

- Equipped with balanced input and pure rear-stage input.

- Output transformer applied 114*55 high-quality iron core, effectively improving audio signal conversion efficiency and widening frequency response.

- Handy plug-in type tube cover.

- Hand made construction with finest point to point wiring.

- Uses 6922 and ECC82 for voltage amplification, and 6SN7 for cathode-coupled push-pull drive of KT170, achieving ultra-linear push-pull power amplification.

- Line1, Line2, Line3: three sets of RCA input ports.

Specification

Tube Complement: 6922*3, ECC82*2, 6SN7EH*2, KT170*4                              

Power output: 130w+130w (Class AB Push-pull)

Frequency response: 20Hz~35kHz (-3dB)                   S/N Ratio: 89dB

Input Sensitivity: RCA:0.36V BAC:0.5V PRE:1V          Input Impedance: 100kΩ 

Output Impedance: 4Ω, 8Ω, 16Ω                                  Power Consumption: 750W                    THD: 1% (1kHz)                                                            Net Weight: 45kg

Auxiliary Output(SUB/PRE) : 1.8V                     

Dimension (W×D×H): (430 x490 x 248) mm