NuForce HAP-100 Silver + Sennheiser HD 598

NuForce HAP-100

The HAP-100 is a preamp and headphone amplifier for the audio enthusiast for whom quality headphone listening is a priority. The HAP-100's innovative design offers features never before available at its modest price point. Most significantly, the HAP-100 shares technologies first employed in our flagship P-20 preamp, along with other audiophile-grade developments. As with the remarkable P-20, the HAP-100 exploits NuForce's most recent work in volume controls. At the unit's core is a switched-resistor ladder network of low-noise, thin-film resistors, one per volume setting, permitting discrete, high-resolution increments of 1dB for the HAP-100's one hundred volume steps. A preamplifier stage providing 5dB of gain with zero negative feedback for fatigue-free listening A single-ended Class A headphone amplifier stage (a design topology long held by audiophiles to be the last word in headphone reproduction) Top-grade relays for input selection A linear power supply employing a toroidal transformer, large capacitor reserves and high-speed regulation for fast, clean power to all circuits A signal-to-noise ratio in excess of 100dB THD+N = 0.002%, assuring the ultimate in accurate reproduction Four low-noise, stereo RCA inputs One RCA stereo output offering a full 7.8Vrms to effortlessly drive any amplifier. This output can be turned off (by pressing On and then Input buttons on the remote control) while the 6.3mm headphone output remains enabled. A front-panel 6.3mm jack for large, over-ear headphones A stylish three-digit display (setting 1 for input selection / settings 2 and 3 for output levels from 00-99) A full-featured remote control