E7801 Xonar Essence One Hi-Fi USB DAC (Digital-to-Analog Converter) Opamp Swap Guide Third Edition Oct. 2012 Copyright © 2012 ASUSTeK Computer Inc.
1. Disassembly English 1. Loosen the four screws in the front panel and the two screws in the rear panel with a screwdriver. Front Panel BIT PERFECT Xonar Essence One 192 176.4 COA 96 TOS 88.2 USB POWER UPSAMPLING INPUT MUTE 48 _ + VOLUME 44.1 _ HEADPHONE VOLUME + Rear Panel COAXIAL L 230 R UNBALANCED OUTPUT R L TOSLINK BALANCED OUTPUT USB DIGITAL INPUT VOLTAGE SELECTOR AC IN 2.
2 4 1 3B English 1 3A 4 1 4 2 3B 1 1. Serves as I/V (current to voltage convertor) that turns current from DAC into voltage for output purpose. Changing this will affect all outputs (including Headphone output, RCA output and XLR output). 2. Serves as Low Pass Filter that filters background noises. Changing this will affect all outputs (including Headphone output, RCA output and XLR output). 3A. Serves as buffer that enhances the output signal for the speaker.
English Recommended OPamp List Brand Model name NS LME49860 NS LME49720NA NS LM4562NA TI OPA2111 TI OPA2132 TI OPA2107 ADI OP275 ADI AD823 NJRC MUSE01 NJRC MUSE02 Sound Impression The following table lists the sound impression brought by different combinations of op-amp pairing.
From 1 January 2012 updated warranties apply to all ASUS products, consistent with the Australian Consumer Law. For the latest product warranty details please visit http://support.asus.com. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage.