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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 [email protected]

www.hafler.com

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Содержание HA75

Страница 1: ...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 ...

Страница 2: ... looking for more information please visit the HA75 FAQ page on the Hafler web site This is where we post answers to questions from users that are often helpful Then if you are still missing something feel free to send us an email at info hafler com and we will do our best to reply in short order HA75 Tube head headphone amp USER GUIDE CAUTION HIGH VOLTAGE There are high voltages inside the HA75 B...

Страница 3: ...e signal amplification Tubes are preferred by audio enthusiasts and recording engineers for their smooth natural sound The HA75 tube sound will reduce ear fatigue compared to typical solid state counterparts The HA75 is also able to generate tons of power Unfortunately this opens the door to potential risks that you must be aware of The high output tube amplifier is intended for use by recording p...

Страница 4: ...k into the circuit 4 GAIN Used to adjust the volume for headphones 5 FOCUS Active matrix lets you control the width of the stereo image to replicate listening to loudspeakers in a room 6 VOX Three position switch lets you enhance low frequencies to suit the listening level and program material 7 HEADPHONE OUTPUTS Dual TRS outputs to enjoy the listening experience with a friend or client For best r...

Страница 5: ... B Unbalanced RCA inputs to connect any 10dB line level source to the HA75 12 INPUT A RCA Switch able balanced and unbalanced inputs for any hi fi system Standard RCA connectors 13 INPUT A SELECT Switches between RCA and XLR connections for INPUT A 14 INPUT A XLR Balanced input for hi fi system or studio use XLR inputs follow the AES standard with pin 1 ground pin 2 and pin 3 15 12AX7 TUBE Dual tr...

Страница 6: ...onnect to the HA75 input A RCA inputs Make sure the input switch on the rear panel is in the out position and that you retain the left right standard to ensure you experience the music the way it was engineered during the recording process Once you are up and running you can add a second source to the HA75 by connecting it to input B Switching between the two sources is done using the front panel ...

Страница 7: ... THRU outputs are un buffered and a simple pass through VOX or FOCUS will have no effect The TUBE OUT delivers the signal after it has been processed by the HA75 s tube amplifier This can be used to position the HA75 in between a preamp and power amp to add a warm tube character to the signal path In the studio it can be applied to recordings to warm up stale digital tracks or give instruments and...

Страница 8: ...t also lets you route the signal from your laptop to your power amp using the HA75 to select the active input and control the levels Plug in your headphones and then turn up the source audio system to a low level Slowly increase the level on the HA75 using the big volume control knob in the middle Testing at low volume will prevent damage to your headphones and protect your hearing should a connec...

Страница 9: ...k will affect the overall gain HA75 Feedback control lets you ad just the degree of warmth added to the signal When the feedback switch is in the out off position the feedback control is preset to approximately 2 o clock To activate depress the switch The feedback control is configured so that when in the full clockwise position 5 o clock there is no feedback and the gain of the HA75 is at maximum...

Страница 10: ...u away from the artist s intended mix The solution is the Focus control This is an active matrix that mixes a mono blend of the two channels back into the stereo image This control is much more precise than a typical passive mono blend Controlling the amount of width brings the stereo image from wide to narrow as you increase the control from counter clockwise to clockwise Upon listening depending...

Страница 11: ...nded high frequencies others so much bass they can cause your head to spin Another problem is listening to music that may have been recorded in the 1960 s or 70 s that may lack bass Set the VOX switch in the up position to increase the bass and simulate the effect of these over exaggerated headphones or offset bass lacking mixes This also allows the recording engineer to simulate listening to vari...

Страница 12: ...the risk of loss or damage A copy of the original invoice showing date of purchase and the dealer name must accompany any request for work to be performed under this limited and transferable warranty This warranty shall not apply if the product has been damaged due to abuse misuse misapplication accident or as a result of service or modification by any other than an authorized Hafler repair center...

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