Noble Audio Lu Ban Headphone Amps closed-back Transducer type Dynamic Frequency

closed-back Transducer type Dynamic Frequency response 5 Hz-45 kHz THD <0

with comparisons to other DACs

Gold-plated PCB with double-sided two-ounce copper for minimal signal path resistance

Specification Value Type NOS R2R DAC with valve output stage and valve-clocked DEM DAC chip Philips TDA1541 Output tube 1x 6N6P or 5687 DEM clock tube 1x E180F (asynchronous)

These efforts provide

Noble Audio Lu Ban Headphone Amps closed-back Transducer type Dynamic FrequencyNamed after the legendary Chinese craftsman and inventor synonymous with precision and ingenuity, the Noble Audio Lu Ban is a three driver hybrid IEM that combines a 10mm wooden composite dynamic driver with two newly developed Super Magnetic planar drivers. It is an unusual and ambitious configuration that seeks to blend the natural resonance and tonal weight of wood with the speed and clarity that planar technology uniquely provides. Each pair is