Lin. ∅" and "Min. ∅"have the same response. "Steep" is a few dB off at 20 kHz, but still flat to beyond 19 kHz. There have been concerns voiced that USB is intrinsically a more jittery interface than regular S/PDIF, so we tried our best to hear any differences between the various options. Frankly, we couldn't – certainly not consistently. Nor could we measure any, the DacMagic turning in measured results which in every way qualify it being as state of the art.

It only has digital inputs so it's not really a preamp, but it does have four selectable inputs, a volume control and even a headphone output, so for many of us, it can be our master control center. Fed a 16-bit/44.1kHz rip of Dusty Springfield’s Son Of A Preacher Man, the DacMagic 100 serves up an open, spacious sound. Vocals are given space to breathe and, even with a mix of instruments thrown in, everything knits together well.Digital Inputs: USB, (2) TOSLINK or coaxial RCA digital inputs. Also a flat USB connector for a dedicated, optional BT100 bluetooth receiver. Linear phase is the type of filter most commonly used in up/oversampling players, since the very first Philips' machines in the early 1980s. It gives no phase shift at all within the audio band and rolls off very sharply around half the sampling frequency. Conversor de digital a analógico con entradas digitales S/PDIF y TosLink, y una entrada de audio USB (todas compatibles con 24 bits) kHz level error versus digital modulation level, -120 ~ 0 dBFS, undithered 24-bit 44.1 ksps input. ( R&S UPL.)

Read the Users Manual to disable the volume control; as I recall it's done by holding one button while turning it on. If you want to go wireless, there is an inevitable drop in quality – but the aptX dongle connected to our smartphones and laptop easily enough, and sounded better than standard Bluetooth connections. Excellent, I've never tested better, and more expensive DACs have been worse! I also tested directly from the DVD changer via RCA and from the MacPro via TOSLINK, and they were the same, so I didn't bother to show them here. This is superb performance. Generalmente, los convertidores de digital a analógico de los dispositivos digitales habituales carecen del nivel esperado y no permiten obtener toda la calidad de audio de las fuentes de sonido. DacMagic 100 toma directamente la señal de audio digital del dispositivo para omitir la tarjeta de sonido o el DAC del mismo. Procesa digitalmente la señal de audio mediante nuestra tecnología de diseño personalizado para mejorar enormemente la calidad del sonido y reducir los niveles de distorsión. Esto produce mejores niveles de detalle, una claridad espectacular y un escalado muy profundo de toda su música. COMPATIBILIDAD THD versus level from -60 dBFS to 0 dBFS, unbalanced output at maximum variable gain, undithered 24-bit 44.1 ksps input, 22kHz bandwidth. ( R&S UPL.)Is it a jump in performance on the original? Yes. It sounds better and does more, and if you value the extra features then the DacMagic Plus could be ideal. You'll be spending a lot of time turning this knob, and it's plastic and not that deep, so grip isn't that wonderful. There's a choice of Linear Phase, Minimum Phase and Steep filter modes, which you should experiment with, too (we liked Minimum the best).