HTA-2500B v.2 Integrated Amplifier


The low frequencies presented by the HTA-2500B are dense, powerful with extraordinary punching force and incredible extension…
The double bass accompanying Patricia Barber had big load of sound tones especially in handling the dynamics without even the slightest trace of compression. (Hi-Fi Choice review)

The TAGA HARMONY HTA-2500B dual-mono 2 x 200W hybrid amplifier which utilizes 2 high-performance 12AX7-T PSVANE Treasure Mark II vacuum tubes in the preamp section serving as a buffer amplifier and 6 pairs of high-power Sanken transistors (2SC4468/2SA1695) in the output.

The HTA-2500B combines the best of both worlds – a very inviting rich sound, with huge power making it ideal to drive difficult loads.

2 toroidal transformers with a total output of 1200W (600W per channel) provides large amounts of clean and high voltage,  stability and very low AC ripple current. This reflects in higher dynamics and pure energy with greater abilities to properly drive very demanding and powerful speakers.

Audiophile grade ELNA capacitors (2 x 80V/10000uF for each channel) ensure stable playback improving music tone and sound field depth.
Audiophile grade Japanese ALPS volume potentiometer provides minimal noises and channels crosstalk and has excellent operational feel and limits errors between the two channels.

Oversized aluminium heat sink system (independent heat sink for each channel) helps to disperse internal heat and allows for long term high power playback with limited distortions.

The high-end class, gold-plated speaker terminals offer almost lossless audio signal transmission to speakers.
Analog inputs with high-end solid machined brass RCA sockets can accommodate up to 2 stereo devices.

You can connect a range of digital devices via optical and coaxial inputs and a built-in high-resolution 24bit / 192kHz DAC (based on Wolfson WM8805 and Cirrus Logic CS4344 circuits) will always provide the best sound performance.

The HTA-2500B is also an ideal companion for mobile devices – stream music from smartphones, tablets or computers compatible with Bluetooth®.

For those who prefer discrete listening we equipped the HTA-2500B with a high-end headphone preamplifier.

A preamplifier output is dedicated for an optional external power amplifier or powered subwoofer and speakers.

The HTA-2500B offers additional options for easy upgrading the sound quality:
– Removable IEC power cable gives you an option to upgrade your system with a premium audiophile power cable in any time;
– The tubes are installed in high-quality ceramic sockets and they can be very easily exchanged for new tubes of your choice.
The HTA-2500B is a splendid mixture of analog tube sound, power, precision, purity and multidimensional soundstage imaging!


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DesignHybrid amplifier
Class A/B
Dual Mono
Vacuum tubes2 x 12AX7-T PSVANE Treasure Mark II
Power output / impedance2 x 200W 8ohm
2 x 400W 4ohm
DA converter24bit Cirrus Logic CS4344
(Limited to 16bit playback)
Wireless connectivityBluetooth® v4.0
Digital inputsOptical, Coaxial
Analog inputsCD, Line
Analog outputsRCA Pre-Out
Headphone outputImpedance: 32-300ohm  
Output power: 350mW, 300ohm 
Frequency response20Hz - 35kHz (±0.5dB)
Total Harmonic Distortions≤0.15% (1kHz 1W)
Signal/Noise ratio92dB
Features / accessoriesDimmer - tube window backlight
Mode: Direct, Loudness

Bass 100Hz ±12dB
Treble 10kHz ±12dB

Aluminum remote controller
Antenna Bluetooth®
Removable IEC power cord
AC power / power consumption230-240V 50Hz, 1200W (max)
Dimensions (H x W x D)14 x 43 x 44 cm
Weight21 kg / pc.





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