Stereo Power Amplifier
An ultra-compact stereo power amplifier, powered by Hypex Ncore technology,
designed to enable Bi-amping, or use in BTL (Bridge Tied Load/Bridged) mode
he AP-505 is a versatile stereo power amplifier based around a high-performance, TEAC-tuned, Hypex Ncore power amplifier module, housed within a compact and elegant case.
Capable of operating in bi-amp and BTL (Bridge Tied Load/Bridged) modes, in addition to conventional stereo operation, the AP-505 produces a maximum 130W + 130W of output power in stereo/bi-amp modes and 250W in BTL/bridged mode. At its heart is an Ncore power amplifier module, made by Hypex of the Netherlands and specially tuned by TEAC’s R&D team, for superlative sound quality
As for the exterior, lightweight aluminum-alloy panels cover a robust steel chassis. A pair of large level meters add visual interest when the amplifier is in action, while TEAC's patent-pending ‘Pin-point’ feet, located at three strategic positions on the underside, add incision to the sound, helping to create a more detailed and stable stereo image.
- Hypex Ncore power amplifier module, tuned by TEAC
- 130W + 130W(4Ω) of max output power, or 250W(8Ω) in BTL mode
- 3 switchable output modes: Stereo, Bi-Amp and BTL (Bridge Tied Load/Bridged)
- Fully balanced circuit design, from input to output
- Power supply features large toroidal power transformer and Schottky barrier diodes
- Comprehensive protection circuitry (Current surge, Over-voltage, Over-heating)
- Patent-pending ‘Pin-point’ feet for easy installation (Japan Patent No.4075477, No.3778108)
- Large level meters
- XLR Balanced and RCA Unbalanced analog audio inputs
- RoHS compliant
Latest Hypex Ncore amplifier technology, tuned by TEAC
Not only for conventional stereo mode with 130W + 130W of output power, this compact unit also provides versatile speaker drive modes, Bi-amp and BTL modes by deploying a couple of AP-505 units side by side. The Bi-amp mode drives woofer and tweeter independently, while the BTL modes produces 250W of output power in each channel.
Full-metal, small footprint body for rigidity, stability and elegance
Every external panel – at the front, top and sides - is formed from high-grade aluminium alloy, firmly attached to the robust steel inner chassis. This method of construction helps reduce the transmission of mechanical vibration, ensuring that every single element inside the unit is allowed to perform at its best. Thanks to its convenient A4-sized footprint, the AP-505 easily slots into modern interiors where space-efficiency is important, such as on a desktop. This is in stark contrast to most conventional bi-amp/BTL-capable power amplifiers which are usually bulky, full-width units.
By employing a fully-balanced circuit design from the input section to the output stage, the AP-505 keeps the audio signal as unadulterated as possible as it moves through the amplifier, the result being extremely low distortion levels and an excellent signal-to-noise ratio (assisted by the effective elimination of common-mode noise).
Carefully selected components, exclusively designed for hi-fi applications
At the input stage, where sound quality is fundamentally defined, high-quality MUSES8820E dual op-amps are employed for both the XLR and RCA inputs. In the power supply section for the input stage, both the left and right channel rectifying circuits are completely independent from the power transformer onwards, and employ four, high-capacity, 4700μF capacitors on each channel (8 in total), achieving clear soundstage separation between channels.
At the XLR input section, a well-designed circuit delivers excellent signal integrity, thanks in part to the elimination of coupling capacitors that can often lose audio information as a signal travels through them.
Dual analog level meters signal musical momentum
Analog level meters on the front panel move in response to signal levels, giving a visually pleasing confirmation that the amplifier is doing its job. A four-step dimmer (bright, mid, dim off) allows users to adjust the intensity of display to their taste, while a switchable sensitivity (±0dB, +20dB, movement off) allows you to enjoy more, less, or even no meter movement, if preferred.
Naturally, even if the backlight is off and meter movement has been disabled, you are still able to tell the unit is on... by checking the position of power switch!。