SAEQ HSA-1c Hybrid Headphone Amplifier
SAEQ HSA-1c Hybrid Headphone Amplifier
SAEQ HSA-1c Hybrid Headphone Amplifier
SAEQ HSA-1c Hybrid Headphone Amplifier
SAEQ HSA-1c Hybrid Headphone Amplifier

SAEQ HSA-1c Hybrid Headphone Amplifier

CHF 4,499.00

Delivery time approx. 2-3 weeks

For all headphones


HSA-1c is an improved version of our famous HSA-1b amplifier. The new version offers you uncompromising resolution and refinement of musical details and an extremely powerful output stage.

We tried to give it additional potential to drive planar and dynamic headphones. When you choose the HSA-1c, it no longer matters which headphones you connect to it.

He is uncompromising in the presentation of musical material and reveals new details you haven't heard before.

With the HSA-1c, you don't have to compromise when choosing headphones. It doesn't matter if it's ribbon, dynamic or planar headphones. The different impedances and outputs are irrelevant. The HSA-1c is powerful but also gentle in its presentation.

Which makes him uncompromising

  • Fully discrete technology with no integrated (hybrid amplifier) ​​circuits and SMD components. This approach gives us greater freedom in the choice of components and hence the possibility to choose the most optimal elements for the given function
  • a powerful and robust output stage with quasi-complementary output transistor pairs (quartet?) with a total output of 300 watts per channel and possible pulse currents of up to 8 amperes.
  • Input stage single-end without capacitive input compensation.
  • Bias stage in pure A class also without capacitive compensation
  • Volume control via 24-stage attenuator. Channel difference less than 0.1dB
  • all elements have been carefully selected in a variety of listening tests with the aim of achieving a very high level of reproduction. It can directly drive ribbon, electrodynamic and flat headphones as well as loudspeakers of the highest class.

Review Headphones Guru

"The HSA-1b has punch, dynamics and a level of transparency that really stands out and will have you staying up late just to hear another track.

If you already own the SR1a headphones and are looking for a top-of-the-line amp, the HSA-1b is for you! Especially if, like me, you have a collection of other great headphones that you want to power, this amp will fulfill any upgrade request you might have in the future! Highly recommended!

The HSA concept has its own impressive history, which you can read about in a number of successful reviews on our website. "


Load Impedance headphones out - direct

0.3-600 ohms

Load impedance speakers out

2-8 ohms

Output Power (one chanel driven):

32W/2 ohms, 20W/4 ohms,10W/8 ohms, 5W/16 ohms, 2.5W/32ohms, 1.25W/64ohms, 0.6W/120 ohms, 0, 3W/300 ohms, 0.15W/600 ohms at 1khz/sine

Frequency Response:

500mv/in/sin. 15hz - 500kHz (-1dB/ -3dB)

Power Bandwidth:

120kHz (-1db) at 1W


< 0.3% at 1khz

Signal to Noise Ratio:

Better than 95dB

Input Impedance:


Input Sensitivity for full OUT:

0.6V at 1kHz

Input Connections:

INPUT 1- 2 RCA Single-Ended, INPUT 2 - 2 XLR 3-pin Balanced (female)

Output Connections:

2 x XLR 4-pin female (balanced planar & dynamic headphones)

2x6. 3mm stereo jack (Planar & Dynamic headphones) 0.3 600Ω

Speakers OUT 4mm banana connector

Max Power Consumption:

150W, without signal 20W

Working voltage:

110V/220VAC (selector switch) or 100V (requires internal connection)


Height 90mm, Width 218mm, D 320mm (3. 54x8 58x12 60 inches)


net 6.1kg / gross 7.3kg