TAGA Harmony
Hybrid Amplifiers

HTA-700B v.3-USB (2022) Print

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The HTA-700B v.3 USB combines the analog sound of tubes with the power of transistors to give the best sound at the price!

• Sleek aluminum design is suitable for most interiors.
• Hybrid design utilizing two 5BK7 vacuum tubes (made in the U.S.A.) in the preamp section and transistors ensures a very warm, linear and lifelike sound with high dynamic presentation.
• High-performance and high-power toroidal 150W transformer provides stable, constant and immediately-available energy at any volume level and allows to properly drive different types of speakers.
High grade capacitors (2 x 50V/3300uF) ensure stable playback improving music tone and sound field depth.
• Audiophile Wima capacitors used on the input to and output from the tubes as well as for the tone regulators.
• 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 aluminum 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.
Bluetooth® - to wirelessly stream music from smartphones, tablets or computers.
2 analog inputs and digital inputs: optical and USB. The USB input supports digital audio files up to 32bit/768kHz or up to DSD512 to play music stored on computers or smartphones.
Preamplifier output dedicated for an optional external power amplifier, a powered subwoofer or active speakers.
• All RCA sockets are gold-plated.
• The high-end class, gold-plated speaker terminals offer almost lossless audio signal transmission to the speakers.
High-fidelity headphone preamplifier for those who prefer discrete listening.
Aluminum remote controller.
• IEC C14 power inlet and a removable Schuko-IEC C13 power cord an option to upgrade your system with a premium audiophile power cable in any time.

Design Hybrid amplifier
Class A/B
Vacuum tubes 2 x 5BK7 (USA)
Power output / impedance 2 x 45W 4ohm
2 x 26W 8ohm
DA converter CT7601PR + ES9018K2M, MS4344

PCM asynchronous up to 32bit / 44.1kHz - 768kHz
DSD up to DSD512*
* Windows® supports DSD Native and DoP.
* MacOS® supports DSD DoP.

Optical: up to 24bit / 192kHz, DoP64
Wireless connectivity Bluetooth® v4.0
Digital inputs Optical, USB (for computer)
Analog inputs CD, Line
Analog outputs Stereo RCA
Headphone output Impedance: 32 - 300ohm  
Output power: 300mW, 300ohm 
Frequency response 20Hz - 20kHz (±2dB)
Total Harmonic Distortions ≤1% (1kHz/ 1W)
Signal/Noise ratio 80dB
Features / accessories Regulation:
Bass 100Hz ±8dB
Treble 10kHz ±10dB

Aluminum remote controller
Antenna Bluetooth®
Removable IEC power cord
AC power / power consumption 220-240V 50/60Hz, 150W
Dimensions (H x W x D) 13.7 x 20 x 28.8 cm
(incl. knobs, feet and speaker terminals)
Weight 5.5 kg / pc.
Black (aluminum) Black (aluminum)
Silver (aluminum) Silver (aluminum)

Hybrid amplifier

What does it mean and why does TAGA Harmony use this approach?

Hybrid means a combination of two different techniques to create an amplifier in one device: the World of tubes and the World of transistors.

TAGA Harmony amplifiers use vacuum tubes in the preamp section and transistors in the power stage. This results in tube, soft and analog-like sound character and at the same time high dynamics and power provided by transistors, which is usually a weak point of pure tube designs.

The sound of TAGA Harmony hybrid amplifiers is not only silky and rich but also powerful and dynamic. In addition, hybrid amplifiers compared to pure tube amps have better abilities to properly drive different kind of speakers.

After being turned on a hybrid amplifier requires to warm up its tubes to reach its full sound capabilities – it usually takes from 5 to 15 minutes depending on model and room temperature.

USB Driver (Windows) Download
User manual (10-2023) Download

5BK7 / 5BK7A tubes - what replacements can be used?

One of the following tube models may be used in this device: 4BC8, 4BQ7A, 4BS8, 4BX8, 4BZ7, 4BZ8.

Vacuum tubes - what is the warranty period?

Vacuum tubes contained in our products are warranted for 6 months from the date of purchase.