Taga Harmony HTA-25B silver

Taga Harmony HTA-25B Amplifier: The Affordable Hybrid That Combines Tube Warmth with Modernity

The Taga Harmony HTA-25B is a hybrid stereo integrated amplifier that blends the warmth of tubes with the power of transistors. This entry-level model offers a unique sound experience at a highly competitive price, while incorporating modern features like Bluetooth. Let’s dive into the details of what this amplifier has to offer for budding audiophiles and vintage sound enthusiasts.

A Retro Design That Catches the Eye

The HTA-25B boasts a vintage design that will undoubtedly stand out in your hi-fi setup. Its front panel is dominated by a large analog VU meter displaying the audio signal level, reminiscent of classic amplifiers from the 60s and 70s. The four preamp tubes, protected by a removable metal grille, are visible through a front window, adding a touch of retro charm to the overall look.

The compact matte black metal casing measures 264 x 138 x 298 mm, making it easy to integrate into most setups. Essential controls, such as the volume knob and source selector, are conveniently located on the front panel. Despite its affordable price point, the unit exudes a sense of sturdiness and quality.

Tube Power for Musicality

At the heart of the HTA-25B is a tube preamp stage, featuring two 6P1 tubes and two 6N1 tubes. This configuration delivers the warmth and harmonic richness characteristic of tube amplifiers, highly valued by audiophiles. The amplification section, on the other hand, uses bipolar transistors in Class AB, striking a good balance between power and sound quality.

This hybrid architecture allows the HTA-25B to deliver 2x 18 W at 8 ohms or 2x 25 W at 4 ohms. While modest on paper, this power is sufficient to drive most entry-level bookshelf or floor-standing speakers in medium-sized rooms. The sound is described as warm, musical, and engaging, with a strong presence in the midrange and smooth, airy highs.

Versatility and Modern Connectivity

Despite its retro appearance, the HTA-25B doesn’t skimp on modern connectivity. It features a Bluetooth 4.0 receiver, enabling wireless streaming from smartphones, tablets, or computers. This functionality is particularly convenient for everyday, casual use.

The amplifier also includes a front USB-A port, compatible with digital audio file playback from USB drives or external hard drives. Supported formats include MP3, AAC, APE, FLAC, WAV, and WMA, covering most digital playback needs.

Comprehensive Connectivity for All Sources

On the rear panel, the HTA-25B offers a generous array of connections for its category:

• Two stereo RCA line inputs for connecting analog sources like a CD player or a pre-amplified turntable
• A pre-out output for using the amplifier as a preamp or connecting an active subwoofer
• Screw terminals compatible with banana plugs, accommodating thick speaker cables

The front panel also features a 6.35 mm headphone jack output, capable of delivering 2x 80 mW at 16 ohms, sufficient for most hi-fi headphones on the market.

Built-In DAC for Digital Sources

The HTA-25B includes a 16-bit / 44.1 kHz digital-to-analog converter (DAC). While its specifications are modest compared to today’s high-end DACs, it provides a practical solution for digital file playback via the USB port, eliminating the need for an external DAC for beginner users.

A Warm and Engaging Listening Experience

Listening tests of the HTA-25B reveal a warm and engaging sound, typical of tube amplifiers. The midrange is prominent, with excellent vocal presence and natural reproduction of acoustic instruments. While the bass isn’t particularly deep, it is described as rounded and pleasant.

The soundstage is wide and airy, offering good instrument separation. The HTA-25B particularly shines with acoustic genres, jazz, and classical music, where its warmth and musicality are most evident.

Technical Specifications

Amplification

• Type: Hybrid amplifier class A / B
• Output power:
  • 2 × 25 W RMS at 4 Ω
  • 2 × 18 W RMS at 8 Ω
• Tubes: 2 × 6P1, 2 × 6N1

Audio Performance

• Total harmonic distortion: ≤ 0.5% (1 kHz at 1 W)
• Signal-to-noise ratio: ≥ 75 dB
• Frequency response: 20 Hz – 28 kHz
• Headphone output:
  • Impedance: 32-320 Ω
  • Power: 80 mW at 160 Ω

Connectivity

• Inputs: 2 stereo RCA jacks, USB port (Type A, for USB drives)
• Preamp output (since the 2011 version)
• Wireless connection (Bluetooth):
  • Version: v4.0
  • Profile: Advanced Audio Distribution Profile (A2DP)

Physical Characteristics

• Dimensions (H × W × D): 138 × 264 × 298 mm
• Net weight: 4.5 kg
• Power supply: 220-240 V ~ 50-60 Hz
• Power consumption: 120 W
• Included accessories: power cable (IEC)