Pass Labs Preamp and Headphone Amp
- Condition: Used
- Price: 2055.56 EUR
- Status: unsold
- Item number: 276091814943
- Bids: 0
- Seller: muniahme-1 (63|100.0%)
- Seller information: non commercial
- Item location: Mississauga, Ontario
- Ships to: Worldwide
- Shipping: EUR
- on EBAY
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Description
MAIN FEATURES:* Works with headphones with impedances of 15 ohms to 600 ohms.* Designed as a power amplifier rather than a typical headphone amplifier to be able to drive low impedance planar headphones.* Low feedback wide bandwidth discreet design.* Class A direct coupled Mosfet output stage.* Custom low noise Toroidal power transformer with a Faraday shield.* Discreet regulated power supply for audio circuits.The Pass Labs HPA-1 is a Class A headphone amp that was designed to amplify headphones with impedances of 15 ohms to 600 ohms. It can deliver full-range dynamics across the entire frequency range. The HPA-1 can even drive headphones that present difficult loads in terms of impedance, power consumption or both.In order to stand out from the crowd, Pass Labs conceptually designed the HPA-1 as a real Class-A power amplifier, not as an accessory offering only incremental performance gains. The HPA-1 cuts no corners in the circuit design and spares no necessary expense in execution. The foundation of the HPA-1s engineering is a custom, low-noise shielded toroidal power transformer feeding a discreet low noise regulated power supply for the audio circuits. The importance of the power supply is often overlooked and plays a large part in the overall performance of the amplifier.The HPA-1s amplifier circuits are low-feedback, wide-bandwidth discreet designs employing J-Fet input stages and Class A-biased direct-coupled MOSFET output stages. The HPA-1 easily drives headphones presenting loads from 15 to 600 ohms, particularly excelling on planar headphone designs. The sound is rich and detailed.The HPA-1 has a single high-quality headphone jack on the front panel, two sets of single-ended analog inputs via RCA jacks on the rear panel, and also a set of switchable Preamp line-level output jacks on the rear panel. There are no compromises with the HPA-1 when used as a stereo preamp, and it will compete against contemporary preamplifiers. The rear panel holds the power switch and fuse. Volume control is via a hefty rotary knob connected to an ALPS Potentiometer. The other front-panel controls are three pushbuttons to select inputs or to engage the Preamp output.The substantial casework is the customary and well-recognized brushed aluminum shared with other Pass Laboratories products.
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