Single-ended Class-A Performance
The NuForce HAP-100 preamp and headphone amplifier has been designed for the audio enthusiast for whom quality headphone listening is a top priority. The HAP-100's innovative engineering combines features seldom seen at this price point. Most significantly, the HAP-100 offers single-ended Class-A performance, which is considered by many to be the ultimate in high-fidelity design.
Advanced Volume Control Technology
The HAP-100 incorporates the same volume control technology first developed for NuForce's flagship P-20 preamp. 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 each of the HAP-100's one hundred volume steps. In welcome addition to the volume control's fine-adjustment precision, the signal's passage through a single, high-quality resistor at all settings ensures minimal sound degradation.
Zero Negative Feedback Preamplifier Stage
Following this, a pristine, zero negative feedback preamplifier stage delivers vanishingly low levels of distortion, crystalline accuracy and genuine musicality. A true minimalist design, the preamp incorporates an extremely low-noise FET input stage and single high-quality capacitor in the entire signal path. It provides 5dB of gain with zero negative feedback for fatigue-free listening.
Toroidal Transformer
The HAP-100 is built on a platform that provides the unit's audio circuits with the purest of DC power. With its toroidal transformer for minimizing magnetic-field interference and capacitor bank's massive energy reserve, the HAP-100's linear power supply delivers explosive dynamics and lightning-fast transients.
For transparency, speed, accuracy, resolution and musicality, along with high style and convenience, the HAP-100 has few equals at anywhere near its price. Its specs are nothing short of stellar: THD+N of less than 0.001% and a dynamic range in excess of 110 dB for the subtlest of musical details against the blackest of backgrounds – without a hint of coloration. The HAP-100's performance, features, style and price are bound to delight.
Input and Output Flexibility
The HAP-100 provides four low-noise, stereo RCA inputs and top-grade relays for input selection. One RCA stereo output offers a full 7.8Vrms to effortlessly drive any amplifier. A front-panel 6.3mm jack is ideal for large, over-ear headphones. Also included are a stylish three-digit display (setting 1 for input selection / settings 2 and 3 for output levels from 00-99) and a full-featured remote control. | 
