Hafler HA75 Tube Head Headphone Amplifier

$1,200.00 USD

The Hafler HA75 is a ‘vintage inspired’ headphone amplifier that has been meticulously designed to produce Hafler’s legendary sound quality while adding excitement and character of a real tube circuit to optimize the listening experience.

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The Hafler HA75-DAC is an audiophile tube-based headphone amplifier and USB digital-to-analog converter, with a number of useful and innovative features that excite and enhance the listening experience.

The uncompromising design of this amplifier builds upon the foundation of the original HA-75, which has received praise from many of the ‘golden ears’ of the recording industry for the incredible clarity, warmth, and character provided by its tube-based topology. This same circuitry and 12AX7 tube is employed on the HA75-DAC, with the addition of a USB input for monitoring high-fidelity digital audio up to 192 kHz. Analog inputs are provided via RCA and balanced XLR connectors, and a selector switch on the front of the HA75-DAC allows you to easily switch between analog and digital sources.

A number of additional features allow you to tailor the performance of the HA75-DAC to suit both your listening style and your headphones. The Focus control simulates the experience of listening to speakers in a room, using an active matrix that can be dialed in according to taste. A three-position voicing switch allows you to adapt to the balance of your headphones or the source material by applying a loudness curve or enhancing the bass response; the voicing circuit can also be bypassed for a neutral response. Another exciting addition is the load selector switch, which allows you to tailor the output impedance to match any pair of headphones available.

The chassis of the HA75-DAC is built from 14-gauge steel to block stray magnetic interference, and the back panel features gold-plated RCA connectors to ensure optimal signal transfer. Additional ‘thru’ and ‘tube out’ RCA outputs allow you to use the HA75-DAC to feed another input device, or connect between a preamp and power amplifier to impart the character of the 12AX7 tube.

The HA75-DAC blends superior engineering with powerful user-controlled features to provide an exceptional and unique listening experience, allowing you to enjoy your music like never before.


  1. Power
    Activates the device and the 12AX7
  2. Focus Control
    Brings the left and right channels to the center to simulate listening with speakers in an open room
  3. Level
    Used to set the headphone output level
  4. Load Selector
    Adjusts the impedance of the headphone output to optimize for any type of headphone
  5. Phones
    ¼” TRS output for headphones. Works with headphones ranging from 8 Ohms to 400 Ohms

Technical Specs

Technical Specs

Audio Circuit: Discrete class-A with 12AX7
Inputs: Switchable RCA or XLR
Thru-puts: RCA (left/right)
Output: 1/4″ TRS Headphone
Impedance: 8 Ohm ~ 400 Ohm
Gain: 30 dB
Max Output: 5 V RMS

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