01-02-2019, 01:24 PM
Hi all,
I am looking to build a high quality portable battery powered headphone music player. The rpi with moode 44 will be a very nice source with the bluetooth and wifi functionality, controlled with a smartphone.
For the audio processing I need a super high quality dac/amp that can drive a headphone in a good way.
I use AKG K701 (impedance 68ohm), and Etymotic er-4p (impedance 100 or 27ohms depending on the use of impedance adapter).
If the project evolves I want to invest in better headphones like the planar types.
Would the katana with volume control and line output stage be suitable for driving headphones?
I plan to use 2 lipoly batteries to feed the pi-isolator and katana seperately. Battery size around 2500mAh @3,7v
Is this possible with acceptable playing time (4hours minimum)? What is the power consumption?
I am looking to build a high quality portable battery powered headphone music player. The rpi with moode 44 will be a very nice source with the bluetooth and wifi functionality, controlled with a smartphone.
For the audio processing I need a super high quality dac/amp that can drive a headphone in a good way.
I use AKG K701 (impedance 68ohm), and Etymotic er-4p (impedance 100 or 27ohms depending on the use of impedance adapter).
If the project evolves I want to invest in better headphones like the planar types.
Would the katana with volume control and line output stage be suitable for driving headphones?
I plan to use 2 lipoly batteries to feed the pi-isolator and katana seperately. Battery size around 2500mAh @3,7v
Is this possible with acceptable playing time (4hours minimum)? What is the power consumption?
