Ha75 u s e r g u i d e tube head headphone amp hafler is a division of radial engineering ltd. 1588 kebet way, port coquitlam bc, canada v3c 5m5 (604) 942-1001 info@hafler.Com www.Hafler.Com.
Table of contents page overview ................................................................................ 1 features ................................................................................. 2 connect .................................................................................. 4...
Ha75 'tube head' headphone amp hafler 1 warning high power amplifier the powerful amplifier inside the ha75 is designed to accommodate all types of headphones from 8Ω to 400Ω. As we have no way of determining the headphone impedance, the amplifier is very loud. Exposure to high sound pressure levels...
Ha75 'tube head' headphone amp hafler 1. On: activates the ha75. It is recommended to warm up the tube for 15 minutes to achieve thermal stability. 2. Select: from the front panel you can select between two different inputs designated as a (balanced/unbalanced) and b (unbalanced). 3. Feedback: contr...
Ha75 'tube head' headphone amp hafler 3 8. Power: ±16v 1600 ma external power supply included. 9. Tube out: add the tubehead's warm tube character to a signal path between a preamp and power amp if desired. 10. Thru: un-buffered thru-puts that bypass the ha75 circuitry. 11. Input-b: unbalanced rca i...
Ha75 'tube head' headphone amp hafler 4 connect connecting to and from the hafler ha75 is easy. It features standard rca connectors for home use and balanced xlr-f inputs for professional use in studios. Before making any connections, turn off your audio system. This will prevent plug-in or turn-on ...
Ha75 'tube head' headphone amp hafler 5 if you are using the ha75 in the studio, it is equipped with balanced xlr female inputs that follow the aes standard with pin-1 (ground), pin-2 (+) and pin-3 (-). These are paired with the input-a connectors. Use the selector switch on the rear panel to toggle...
Ha75 'tube head' headphone amp hafler 6 testing connections set all of the front panel knobs and switches to the start position with ab select to a, volume to zero, feedback control fully counter clockwise, focus switch off and loudness (vox) to the middle position. Using the ab select switch the in...
Ha75 'tube head' headphone amp hafler 7 dual headphone outputs the benefit of having two headphone outputs on the ha75 means you can share the listening experience with a friend or client! Using matched headphones is best as the impedance determines the loudness. Otherwise there may be a substantial...
Ha75 'tube head' headphone amp hafler 8 the focus control one of the particularly cool features built into the ha75 is the focus control. This enables you to simulate the effect of listening to music in a free air space, as if playing music through speakers in a typical room. In essence, you can adj...
Ha75 'tube head' headphone amp hafler 9 the vox control this three-position vox or loudness control switch serves two functions. The first is as a traditional loudness control, the second to enhance bass. Back in the 1970's, most integrated receivers were outfitted with a loudness switch that would ...
Three year transferable limited warranty hafler (a division of radial engineering ltd.) (“hafler”) warrants this product to be free from defects in material and workmanship and will remedy any such defects free of charge according to the terms of this warranty. Hafler will repair or replace (at its ...
