ACOUSENCE dac-pre MKII Посібник користувача - Сторінка 9

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Indicator of the sample rate at the input

The sample rate indicator shows the frequency of the selected digital input. 44.1kHz

is at the bottom, 192kHz is at the top. The other four common sample rates (48kHz,

88.2kHz, 96kHz, 176.4kHz) are in between. If no valid digital signal is present, no LED is

lit.

Note the following special feature:

If a valid digital signal is applied or selected via input selection, or if the sampling rate

is changed, the audio signal is always switched directly. However, the device runs for

a few seconds on a kind of "auxiliary PLL" with a reduced quality compared to the main

PLL. During this time, the high-precision clock recovery, the "arfi-femto-reclocking",

first detects the sampling rate and then adjusts the operating parameters

accordingly. Then the clock source is switched automatically. Only when an LED lights

up for one of the six possible sample rates, the "arfi-femto-reclocking" is active. (In

fact, switching from the "auxiliary PLL" to "arfi-femto-reclocking" usually happens

even a close second before the LED lights up).

Phono module (optional)

If the optionally available phono module is equipped, the ANALOG IN inputs is

connected to it. If RCA inputs are also equipped, there is a toggle switch on the rear

panel for switching between RCA and XLR. Here, in principle - in contrast to all other

RCA connections - both connections could also be assigned in parallel and the

respective source could be selected via the switch. As a rule, however, this should be

a basic setting that is made once to match the existing turntable. Therefore, the

switch is located at the back near the connection sockets. Switch pointing

downwards towards RCA selects RCA; pointing upwards towards XLR selects XLR.

The module is - as indicated at the time of ordering - permanently equipped for MM

or MC. However, a later change is quite uncomplicated by exchanging the two input

assemblies. Please talk to your dealer.