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Compact aluminium headphone amp with bass, mid, treble controls, 3.5 and 6.35 mm jacks

BFKK

BFKK SK01 Headphone Amplifier Equalizer Preamp

SKU CH-NEY9-AFSKJ

Portable Class A analog headphone amplifier with bass, midrange and treble tone controls, loudness compensation, 2400 mW high-impedance power, gain switch.

  • Portable Class A analog amp delivers up to 2400mW in high-impedance mode
  • Three-band tone control with centre detents lets you shape bass, midrange and treble precisely
  • One-click tone-defeat button restores flat response instantly for reference listening
  • Loudness compensation preserves perceived balance at low volume during quiet sessions
  • 2500mAh battery provides up to 6 hours of operation and dual 3.5mm / 6.35mm jacks suit 32-300 ohm headphones

Portable Class A headphone amplifier

The BFKK SK01 is a portable Class A analog amplifier designed for headphones and electric instruments. It provides up to 2400mW output power in high impedance mode. The unit suits listeners who want adjustable tone control and loudness compensation for private sessions.

Aluminium body with dual headphone jacks

An aluminium alloy chassis houses a built-in 2500mAh battery rated for up to 6 hours of operation. Connectivity is handled through 3.5 mm and 6.35 mm jacks that accept headphones from 32 to 300 ohms. The layout supports both desktop and on-the-go use without requiring external power.

Bass midrange treble controls with tone defeat

Front-panel knobs adjust bass, midrange and treble, each with a centre detent for flat response. A single button defeats all tone settings instantly. A gain switch matches output to different headphone impedances, while the loudness circuit boosts low-level listening. No software or digital processing is involved.

How it compares

Measured against everything we stock in Earbuds & Over-Ear Headphones, at today’s prices. Recalculated every night.

Price $111.99
Pricier than about 87% of the 7,078 comparable items (median $25.99).

Specifications

No published specifications for this item yet.

Questions about this item

What does the 3.5 mm and 6.35 mm jack interface support in practice?

The 3.5 mm and 6.35 mm jacks accept headphones from 32 to 300 ohms and deliver up to 2400 mW in high impedance mode.

What physical space and power does the aluminum alloy body need?

The unit houses a built-in 2500 mAh battery giving up to 6 hours of portable use and fits on a desk or in a bag without external power.

How do I set the gain level switch correctly for my headphones?

Match the gain position to your headphone impedance range (32-300 ohms); the common mistake is leaving it on high gain for low-impedance models causing hiss.

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