Teac has introduced the HA-507, a preamplifier and headphone amplifier featuring exclusively analog circuitry. This dual mono device showcases the manufacturer’s meticulous focus on power supply design. The HA-507 is anticipated to be available for purchase in early 2025, offered in both silver and black finishes.
Teac HA-507: Headphone Amplifier
The Teac HA-507 is the latest member of the Reference 500 series. It is a pure analogue headphone amplifier without compromises that can also be used as a pure analogue preamplifier. The unit is equipped with RCA and XLR outputs and can easily be combined with a Teac Reference 500 Series power amplifier or any other power amplifier to create a compact but complete system.
Under the hood is a fully balanced dual mono configuration that can deliver 6.7 watts per channel into 32 ohms via balanced outputs, making it well-suited for driving a wide range of headphones. With options for both balanced (XLR and 4.4mm) and unbalanced (6.35mm and 3.5mm) outputs, the HA-507 also offers a preamp pass-through function, allowing it to be used as a standalone headphone power amplifier
Teac HA-507: preamplifier
In preamplifier mode, the HA-507 brings Teac’s precision design to the forefront, including the new advanced Teac-QVCS volume control, which uses a high-precision ladder resistor network for smooth adjustments in 0.25 dB steps. The preamplifier also uses Teac-HCLD 2 technology, which provides fast, powerful external amplifier drive. Music signal can be supplied via RCA or XLR.
Teac HA-507: power supply and housing
The HA-507 is powered by two independent power supplies, one dedicated to audio circuitry and another to control circuitry. Large toroidal transformers and high-speed Schottky diodes provide a dynamic and responsive power source, contributing to exceptional sonic clarity and imaging. The smoothing capacity is 18,800 ?F per channel, which is high for a device that does not need to drive speakers.
Housed in a compact A4-sized aluminum chassis, the HA-507 is suitable for both rack-mountable and desktop installation. Its fanless heat-dissipating design and semi-floating 2.8mm thick aluminum top plate ensure durability, while stress-free metal feet enhance the soundstage. Available in silver or black finishes, the HA-507 comes with a dedicated remote control for easy motorized volume adjustment.
Teac HA-507: Technical Specifications
- Inputs: 2 x XLR, 2 x cinch
- Outputs: 1 x XLR, 1 x RCA
- Frequency response (+1 dB / ?4 dB): 10 Hz to 150 kHz
- S/N ratio (A-weighted, 1 kHz): 110 dB
- THD +N(1 kHz, LPF: 20 kHz): 0.0006 percent
- Headphone outputs: 1 x 6.35mm, 1 x 3.5mm, 1 x 4-pin XLR, 1 x 4.4mm Pentaconn
- Rated power (unbalanced): 2.3 Watt + 2.3 Watt into 32 Ohm, 1.2 Watt + 1.2 Watt into 100 Ohm, 0.48 Watt + 0.48 Watt into 300 Ohm, 0.25 Watt + 0.25 Watts into 600 Ohms
- Nominal power (balanced): 6.7 Watts + 6.7 Watts into 32 Ohms), 4.2 Watts + 4.2 Watts into 100 Ohms, 1.8 Watts + 1.8 Watts into 300 Ohms), 0.95 Watts + 0.95 Watts into 600 Ohms
- Headphone impedance: between 16 Ohms to 600 Ohms
- Power supply: 230 Volt AC, 50 Hz
- Power consumption: 30 Watt
- Standby power: 0.3 Watt
- Dimensions (W x H x D, incl. protruding parts): 290 x 84.5 x 243.9 millimeters
- Weight: 4.6 kilograms
Teac HA-507: price and delivery information
The Teac HA-507 has a suggested retail price of just under $1,900. Delivery is expected to start in early 2025.
