Gustard/Audalytic HP70 Fully Balanced Discrete Headphone Amplifier LME49720 Double op-amp (Silver)

Digital Inputs RCA Inputs (2 sets) input Sensitivity: Typical 2Vrms, Maximum 3Vrms Input impedance: 20kΩ XLR Balanced Input (1 set) input Sensitivity: Typical +15dBu (5V), Maximum +18dBu(6V) Input Impedance:10kΩ Preamplifier Analog Output (Rear XLR) Frequency Response: 20Hz-40kHz(+0.1dB) Signal-to-Noise Ratio: 122dB Channel Crosstalk: <-120dB @ 1kHZ THD+N:<0.0004% IMD:<0.0004% Headphone Amplifier Output 6.35mm Single-EndedOutputImpedance: 0.1Ω 4.4mm Balanced (TRS)Outputlmpedance: 0.2Ω Frequency Response: 20Hz-40kHz(±0.1dB) Signal-to-Noise Ratio:>120dB Channel Crosstalk: -118dB @ 1kHz THD+N:<0.0005%(1kHz,1000mW into 32Ω) IMD:<0.0005%(1000mW into 32Ω) Maximum Output Power (Clipping): ≈ 2000mW (32Ω, balanced) Others Power supply: AC 115V/230V,50/60Hz Power Consumption: <15W Dimensions (WxDxH):220 x 170 x 50 mm(excluding protrusions) Net Weight: 1.6 kg Package Dimensions: 295 x 265 x 85 mm Shipping Weight: 2.1 kg

• This fully balanced discrete Class A amplifier utilizes 4 pairs of power transistors to ensure ample driving power and superior control.
• The preamp utilizes two socketed LME49720 dual op-amps. Preamp output can be disabled for seamless switching between headphone and speaker.
• Input Stage:Fully balanced topology. Single-ended to balanced conversion circuit allows RCA inputs to benefit from full balanced drive performance.
• Built-in 30VA low-noise power supply. Also accepts an external 15-18V DC power input.
• Multi-stage voltage regulation: Lower ripple noise and reduced interference for cleaner audio reproduction.