TOPPING L70 Fully Balanced NFCA Headphone Amplifier (Apos Certified Refurbished)

Note: The silver variant of this product is backordered until April 30th, 2025.  TOPPING's house sound The L70 uses the same NFCA (Nested Feedback Composite Amplifier) module as the A90, giving it that TOPPING “house soundâThis, along with UHGF (Ultra High Gain Feedback) technology, provides excellent DC and AC performance, ultra-low THD+N, and an absurdly high dynamic range of 146dB. Fully balanced The built-in fully balanced amplifier circuit performs exceptionally well with both balanced and single-ended headphones. Additionally, the L70 includes four jacks to accommodate most headphones: 4-pin XLR balanced, 4.4mm balanced, 6.35mm single-ended, and 3.5mm single-ended.  Ultimate compatibility TOPPING designed the L70 to be able to power the vast majority of headphones. With high output voltage, it easily drives high impedance headphones. With high output current, it easily drives low impedance headphones. And with low output noise, it easily powers highly sensitive IEMs withou