TEAC AP-505
TEAC AP-505
TEAC AP-505

TEAC AP-505: Power amplifier with compact Hi-Fi components

TEAC AP-505 is a two-channel power amplifier belonging to the popular 505 series, which includes compact Hi-Fi components. The model is equipped with highly efficient Hypex NCore amplifier modules (class D), which have undergone special “tuning” in order to best meet the specified parameters. The power supply includes a powerful power toroidal transformer and a rectifier section based on ultra-fast Schottky diodes. Thanks to this equipment, it is possible to increase the efficiency of the amplifier, reduce heating, minimize distortion and ultimately obtain accurate, clear and dynamic sound.

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In stereo mode, the TEAC AP-505 produces 70 W per channel at 8 ohms, and in bridged mono mode BTL (Bridge Tied Load) the output power reaches 200 W (8 ohms). Biamping mode (dual mono) is also available. As for the circuitry, a fully balanced topology is used here, and the amplification section provides reliable protection against overvoltage, overheating and current overloads. If there is no signal for a certain period of time, the terminal automatically goes into standby mode with minimal power consumption.

TEAC AP-505 is made in the spirit of audio equipment of the 70-80s with neat dial indicators of the output signal level, which received a “warm” yellow backlight with 4-step dimming. The small aluminum case is traditionally equipped with stylized proprietary rack ears and patented anti-vibration supports (3-position Pin-Point foot system). According to audiophile traditions, and also due to low heat generation, the model uses only passive cooling.

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The rear panel of the amplifier contains two XLR balanced input jacks, as well as a pair of standard unbalanced RCA input jacks. To connect speaker systems, large screw terminals with gold-plated contact surfaces are used. The amplifier is available in silver or black color scheme.

Characteristics of TEAC AP-505

Output power 2 x 115 W (4 Ohm, 1 kHz, THD: 0.8%), 2 x 70 W (8 Ohm, 1 kHz, THD: 0.8%), 200 W (8 Ohm , BTL bridged mono), 250 W (4 ohms, BTL bridged mono)
THD 0.002% (XLR input, 1 kHz, 8 ohms, 12.5 W, JEITA)
Signal-to-noise ratio 110 dB (XLR input , 8 Ohm, 1 kHz)
Frequency range 10 Hz – 50 kHz (XLR input, – 5 dB, 8 Ohm, 1 kHz, 1 W, JEITA)
Inputs unbalanced RCA, balanced XLR
Speaker output 2 pairs of gold-plated screw terminals
Acceptable speaker impedance 4-8 Ohm
Dimensions (WxHxD) 290x85x264 mm
Weight 4.4 kg