TEAC AX-505 Integrated Amplifiers

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TEAC AX-505 Integrated Amplifier $2,399.00

The AX-505 is based around a high-performance, energy-efficient Hypex Ncore power amplifier module which delivers 130W+ 130W of output power from a small unit. This isn’t a standard Ncore module… it has been carefully tuned by TEAC to deliver maximum musical expression from the full breadth of musical repertoire.

From MUSE op-amps in the analogue section – which fundamentally determines the amplifier’s sound quality – to ladder-resistor type volume controls, our engineers have carefully chosen all key components from ‘made for hi-fi’ ranges, wherever possible.

The AX-505 is equipped with a pair of XLR balanced analogue audio inputs, designed to help minimize external noise picked up as an analogue audio signal travels down the interconnect cable.

The AX-505 is also equipped with a 4-pole headphone output jack that supports ‘ground separate connection for excellent channel separation during headphone listening. The CCLC (Coupling Capacitor-less Circuit) headphone amplifier circuit design, meanwhile, eliminates coupling condensers in the circuit’s output stage. This reduces sonic colouration during processing, so delivering a more authentic audio signal to your headphones.

In the power supply section, the AX-505 employs a high-capacity toroidal-core power transformer along with Schottky barrier diodes in the rectifying circuit. The advantage of Schottky barrier diodes over conventional types is that they supply cleaner and more stable current, reducing rectifier noise in every part of the amplifier’s circuitry.

It makes no sense for an amplifier to deliver excellent sound to loudspeakers while generating spurious operating noise from a cooling fan. That is why our engineers paid special attention to the AX-505’s circuit and cabinet design, creating a parts layout that would allow for the natural removal of heat, so achieving a compact but powerful amplifier that doesn’t require a cooling fan.

It’s not just the front panel that’s firmly attached to the robust steel inner chassis . the top and side panels are affixed to it, too. This high standard of construction helps reduce mechanical vibration via heavy parts. A compact design with an A4-sized footprint, the AX-505 fits comfortably into even the smallest of modern spaces.

TEAC AX-505 Integrated Amplifier Specifications

Amplifier section
Max output power 130W + 130W (4Ω, 1kHz, JEITA)
90W + 90W (8Ω, 1kHz, JEITA)
Rated output power 115W + 115W (4Ω, 1kHz, THD 0.8%)
70W + 70W (8Ω, 1kHz, THD 0.8%)
Total harmonic distortion 0.002% (8Ω, 1kHz, 12.5W, JEITA)
Signal-to-Noise ratio 110dB (8Ω, 1kHz, IHF-A)
Frequency response 10Hz to 50kHz (-5dB, 8Ω, 1W, JEITA)
Input section
LINE IN (Balanced)
Connector XLR (2: HOT) × 1 pair
Max input level 3Vrms
LINE IN (Unbalance)
Connector RCA (gold-plated) × 3 pairs
Max input level 2.5Vrms
Speaker output
Connector Screw-type × 1 set (gold-plated, Compatible with AWG8 and Banana-plugs)
Supported speaker impedance 4Ω to 8Ω
Headphone output
Connector 1/8″ (3.5mm) 4-pole stereo jack
Type of connection Ground separate
Max output power 360mW + 360mW (32Ω loaded, THD 10%, JEITA)
Frequency response 5Hz to 150kHz (–3dB)
Total harmonic distortion 0.003% (Output power 30mW 32Ω loaded)
Signal-to-Noise ratio 115dB
Power AC220 to 240V, 50Hz (UK/Europe)
Power consumption 110W
Standby power 0.1W or less (at Auto-power saving mode)
Overall dimensions 11.4″ × 3.2″ × 10.4″ / 290 × 81.2 × 264mm (W × H × D)
Weight 9.27 lbs. / 4.2kg