TEAC AX-505: Fully balanced integrated amplifier from Japan

The TEAC AX-505 compact integrated amplifier has succeeded the AX-501 model, offering similar features with the notable enhancement of increased output power. The design of the TEAC AX-505 is aesthetically pleasing, complemented by robust electronic components. It is equipped with high-quality Hypex Ncore class D amplifiers, specifically tuned for TEAC, delivering a nominal output of 70 W + 70 W (8 Ohm, 1 kHz, THD 0.8%). In addition to its impressive sound performance, these amplifiers are energy-efficient, consuming only 68 W at maximum output and a mere 0.5 W in standby mode.

The device is designed without an internal forced cooling system, ensuring completely silent operation. It features protection mechanisms against current surges, overvoltage, and overheating. A toroidal power transformer is utilized to enhance the power source's resilience to fluctuations. Furthermore, the power section incorporates Schottky barrier diodes, which contribute to increased efficiency and minimized heat generation.

One notable aspect of the TEAC AX-505 amplifier is its inclusion of balanced inputs. This connection type is gaining traction in contemporary Hi-Fi systems, with even mid-range USB DACs featuring such outputs. The preamplifier in this unit is entirely balanced, enabling users to fully exploit the advantages of this connection method. Alongside the balanced inputs, the amplifier offers three unbalanced inputs for linear signal sources and a dedicated output for headphones. This headphone output utilizes a CCLC design (without separating capacitors), ensuring a linear frequency response and an extensive dynamic range suitable for headphones of any standard impedance. Additionally, robust screw terminals are provided for speaker connections, and all connector contact surfaces are gold-plated.

The TEAC AX-505 features a balanced design throughout its entire playback pathway. This model is housed in an aluminum chassis, complemented by aluminum handles and substantial gold-plated screw terminals for connecting speaker cables. The level indicators utilize a four-stage dimming system for backlighting. Additionally, it includes a built-in headphone amplifier utilizing CCLC (a proprietary “capacitorless” technology) and comes with a remote control for convenience.

TEAC AX-505 Specifications

• Output Power 2 x 115 W (4 Ohm, 1 kHz, THD: 0.8%), 2 x 70 W (8 Ohm, 1 kHz, THD: 0.8%)
• Total Harmonic Distortion 0.002% (1 kHz, 8 Ohm, 12.5 W, JEITA)
• Signal-to-Noise Ratio 110 dB (8 Ohm, 1 kHz)
• Frequency Response 10 Hz – 50 kHz (- 5 dB, 8 Ohm, 1 kHz, 1 W, JEITA)
• Headphone Amplifier Power: 2 x 360 mW (32 Ohm, THD: 10%, JEITA), Total Harmonic Distortion: 0.003%, Signal-to-Noise Ratio:
• 115 dB, Frequency Response: 5 Hz – 150 kHz
• Input Voltage 3 V (XLR), 2.5 V (RCA)
• Outputs 3.5 mm balanced mini-jack for headphones (4 contacts)
• Inputs 3 linear RCA, balanced XLR
• Power consumption 110 W, standby: 0.1 W
• Speaker output 2 pairs of gold-plated screw terminals
• Permissible speaker impedance 4-8 Ohm
• Remote control RC-1332, universal
• Dimensions (WxHxD) 290x81x264 mm
• Weight 4.2 kg

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