Taga Harmony PF-1000DC black

Eight outlets, two complementary technologies: the PF-1000DC combines mains noise filtering and DC component blocking in a single chassis. This evolution of the PF-1000 adds a DC Blocker circuit that tackles vibrations and humming in toroidal transformers. With its four different outlet types, it lets you adapt power conditioning to each component in a hi-fi or home cinema system.

Why filter and block DC?

The household power grid carries two types of disturbances that affect audio-video equipment.

Electromagnetic interference (EMI) comes from devices connected to the same network: refrigerators, air conditioners, dimmers, chargers. These disturbances vary depending on the time of day and activity in the building. They result in hiss from the speakers or image degradation.

The DC component (DC offset) is caused by an imbalance between the positive and negative halves of the AC waveform. Toroidal transformers are sensitive to this: they start to vibrate mechanically, producing an audible hum and increased temperature. This phenomenon often affects integrated amplifiers, phono preamplifiers, and linear power supplies.

Four outlet configurations for four uses

The PF-1000DC offers eight Schuko outputs divided into three distinct groups.

Two outlets pass the current without any treatment (direct outlets). They are suitable for power amplifiers, which do not always respond well to filtering that can restrict dynamics during high current peaks.

Two other outlets add DC blocking without filtering. This configuration targets devices with humming toroidal transformers, such as preamplifiers or linear power supplies, when filtering is not necessary or desired.

The remaining four outlets combine filtering and DC blocking. They are intended for digital sources (CD players, DACs, streamers) and phono preamplifiers, which are more sensitive to high-frequency disturbances.

This segmentation lets you choose the appropriate treatment for each device instead of imposing a single solution.

Construction and finish

The chassis measures 43 cm deep, 14 cm wide, and 13 cm high. It weighs 4.2 kg. The front panel and rear panel are made of brushed aluminum, the rest of the structure is folded steel, painted and internally damped with dense foam that absorbs micro-vibrations. Internal wiring uses thick-gauge conductors with screwed connections to reduce impedance.

The front hosts an analog voltmeter that displays the mains voltage in real time and a master power switch. On the rear, there is an IEC C14 inlet for the power cord, a polarity reversal switch, a ground terminal, and a resettable circuit breaker.

Built-in diagnostic tools

The phase detector indicates whether the wiring polarity is correct. A switch lets you reverse the phase without having to flip the mains plug. This feature makes it easier to optimize wiring in a setup where multiple components are interconnected: proper phase alignment reduces leakage currents and ground loops.

The voltmeter allows you to monitor the stability of the power supply. Large variations may indicate a problem with the installation or an overload on the circuit.

Surge protection

The PF-1000DC includes protection against voltage spikes. Stated specifications: maximum surge current of 4500 A (8/20 µs impulse), peak voltage of 3000 V over 10 ms, clamping voltage of 775 V. These values correspond to protection against transients caused by indirect lightning strikes or switching events on the grid.

This protection does not replace a panel-mounted surge arrester, but adds an extra line of defense for sensitive equipment.

Power and consumption

The total allowable load is 14 A, i.e. 3220 W at 230 V. This is enough to power a complete system: integrated amplifier, sources, phono preamplifier, and television. Standby consumption remains below 0.5 W.

The filter attenuates noise by more than 10 dB between 2 and 100 MHz, the range where most domestic electromagnetic interference is found.

Technical specifications

Electrical specifications

• Power supply: 230–240 V ~ 50 / 60 Hz
• Maximum total load: 14 A / 3220 W
• Self-consumption: less than or equal to 0.5 W with no device connected

Filtering and protection

• Noise filtering: greater than -10 dB in the 2–100 MHz range
• Surge protection
  • Maximum surge current: 4500 A in a single 8 / 20 µs pulse
  • Maximum peak voltage: 3000 V for 10 ms
  • Maximum clamping voltage: 775 V with an 8 / 20 µs pulse

Connectivity

• 4 direct Schuko outlets
  • Including 2 equipped with a DC blocker
• 4 filtered Schuko outlets
  • All equipped with an integrated DC blocker
• Removable IEC power cable with the option to upgrade to an audiophile power cable

Advanced features

• Integrated phase detector
• Polarity inversion switch
• Front-panel voltage indicator
• Surge protection

Integrated DC blocker

The integrated DC blocker treats the DC component present on the power grid, which can cause transformer saturation and generate vibrations and mechanical noise.

Advantages of the DC blocker

• Elimination or reduction of the undesirable DC component
• Reduction of transformer hum
• Lower operating temperature
• Improved overall system stability

Dimensions and weight

• Dimensions: 13 × 14 × 43 cm (height × width × depth)
• Weight: 4.2 kg

Why use a mains filter

• Significant reduction of mains noise
• Improved sound quality
• Cleaner, more detailed sound
• Significant reduction of hum
• Quieter and more stable operation
• Reduced transformer heating
• Enhanced surge protection
• Increased longevity of connected devices
• Longer service life for equipment