Topping Inc.
Topping Inc. L70 Headphone Amplifier (Black)
A balanced headphone amplifier with NFCA modules, 146dB dynamic range, 0.3V noise, 52Vpp output, 1.4A current, XLR, 4.4mm, 6.35mm and 3.5mm outputs, dual gain, R2R volume and preamp function
- NFCA modules deliver 146dB dynamic range and 0.3V noise floor
- Four outputs: 4-pin XLR, 4.4mm, 6.35mm and 3.5mm for any headphone
- 52Vpp balanced output and 1.4A peak current drive demanding loads
- Dual gain modes plus eight memory slots match IEMs to over-ears
- R2R relay volume keeps perfect channel balance at every level
Balanced Headphone Amplifier
The Topping L70 is a full-balanced headphone amplifier built around NFCA modules shared with the A90. It delivers a 146 dB dynamic range and 0.3 V ultra-low noise for transparent reproduction across all headphone types. Four outputs cover 4-pin XLR, 4.4 mm balanced, 6.35 mm and 3.5 mm single-ended connections. A preamp function lets it serve as a line-stage for powered speakers or integrated amps.
Upgrade From Entry Amplifiers
The jump is worth it when your current amp cannot drive low-sensitivity planars or high-impedance dynamics without clipping. The L70 supplies up to 52 Vpp balanced output and 1.4 A peak current while maintaining output impedance below .1. Dual gain modes handle sensitive IEMs and power-hungry over-ears without hiss, and eight memory slots store gain and volume per headphone.
Desktop Integration
Installation is straightforward: connect a 12 V trigger cable for automatic power sequencing with a DAC or preamp, then plug headphones into the front-panel jacks. The relay-based R2R volume control eliminates channel imbalance at low levels and survives heavy use. The only common issue is forgetting to match gain to the headphone sensitivity, which can cause unexpected volume jumps when switching outputs.
Highlights
- NFCA modules deliver 146dB dynamic range and 0.3V noise floor
- Four outputs: 4-pin XLR, 4.4mm, 6.35mm and 3.5mm for any headphone
- 52Vpp balanced output and 1.4A peak current drive demanding loads
- Dual gain modes plus eight memory slots match IEMs to over-ears
- R2R relay volume keeps perfect channel balance at every level
Specifications
No published specifications for this item yet.
Questions about this item
What connectors does the L70 provide for headphones?
The L70 offers 4-pin XLR, 4.4 mm balanced, 6.35 mm and 3.5 mm single-ended outputs.
How do I set up the 12 V trigger on the L70?
Connect a 12 V trigger cable between the L70 and your source or preamp; the amplifier will then power on and off automatically with the linked device.
Does the relay volume control on the L70 need periodic maintenance?
The precision relay-controlled R2R volume is designed for long-term durability and does not require routine maintenance.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.



