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Description
The HA-507 is a pure analog headphone amplifier/preamplifier that incorporates TEAC’s premium audio technologies to achieve the highest level of sound quality.
The HA-507 is a no-compromise headphone amplifier that can also be used as a pure analog preamplifier. When paired with a Reference 500 Series power amplifier, you can create a compact yet full-featured separate amplifier system that further enhances the quality of your loudspeaker listening experience.
Two balanced outputs (Neutrik XLR 4-pin and 4.4mm Pentaconn) and two unbalanced outputs (6.3mm and 3.5mm) are provided. Gain can be switched in three levels (High/Mid/Low) to match the headphones being used.
For the ultimate head-fi who wants a separate pre/power amplifier system for headphones, the HA-507 can be used as a separate headphone power amplifier by pairing it with high-end external preamplifiers. Preamp pass-through mode can be activated by a switch on the rear panel.
This feature is also useful for listeners who already own an ultra-high-end preamp for their speaker system and prefer a single preamp configuration for both speaker/headphone listening.
Even in this preamp pass-through mode, the gain and L/R balance functions are enabled for ease of use.
Whether for headphones or speakers, the preamplifier is the heart of an audio system and an important component responsible for the overall sound quality of the system. The HA-507 is a premium compact preamplifier that combines TEAC's audio design excellence in a fully balanced/dual mono configuration to provide an unprecedented high quality listening experience.
The HA-507 has two XLRx2 and two RCAx2 input connectors, allowing you to connect a variety of analog devices to your Reference 500 system. Input switching uses FET switches with no mechanical contacts to enhance signal purity and ensure long life.
To achieve both excellent drive performance and high sound quality, special attention was paid to the power supply design. Two power supply systems, one dedicated to the audio circuits and the other to the control circuits, are completely independent of each other. The large toroidal core power transformer dedicated to the audio circuits has separate left and right windings and couples 18,800μF (4,700μF x 4) capacitors per channel to form a high-capacitance dual mono power supply. It is extremely responsive to changes in the dynamics of the music. No compromises were made in the selection of components, such as high-speed Schottky barrier diodes.