Qudelix 5K Reference DAC AMP

Product Information

This is mainly due to the fact that I can EQ off my Mac, but not my iPhone, and because my phone doesn’t provide enough power to use USB DACs. The Q5k comes in a very simple cardboard box, which includes the BT device, USB-C to USB-C and a USB-C to USB-C cable, as well as some paperwork. The battery duration is pretty good, depending on the power schedule, the used output and the Bluetooth codec, it can range from a whole 15-17 hours to 5-6 hours.

The Qudelix 5K is using two pieces of the ES9219C SABRE DAC chip, for real balanced output, with an in-house written software and application. The QCC512x's ultra-low power consumption and more powerful DSP capability allows application devices to maintain a more secure, high-bit-rate LDAC stream for longer.

If this output is used, the 5K offers its best technical virtues, as it uses the Dual DAC configuration. balanced output has been measured (selecting the option "Normal" or "High") with a digital multimeter, using a sine wave of 100Hz and amplitude 1, in FLAC 870kbps to 96kHz. If I were to carry out blind tests, playing the same files, I don't think I would be able to distinguish either the differences or the origin of the source.

The all-black construction with perpendicular corners is also a change from the rounded corners and glass bodies of the FiiO BTR5 and EarMen Sparrow we saw recently, which makes this less pocket-friendly as a result. In other words, can these portable bluetooth amps effectively replace a desktop DAC like my Schiit Modi 3. From Nov 2021, 5K DAC/AMP is manufactured with ES9219C, which is pin-to-pin compatible with ES9218P. This is the function that differentiates the 5K from all the competition giving it a fair leap ahead, the embedded 20-Band PEQ/GEQ (64-bit double precision) pro-grade equalizer that Qudelix has developed for it.In this regard, it should be noted that Qudelix, is Sony's LDAC "Official Technical Partner" and has developed the LDAC solution for Qualcomm's QCC512x platform, which is a best-in-class SoC for high-end Bluetooth applications. In this case, the Bluetooth source is the main source and the USB DAC connection is the secondary source.

While the single output works with only one DAC chip, switching to the balanced output takes advantage of the dual Sabre DAC.You can control the volume of the Smartphone, the device and display the Bluetooth codec being used, as well as its bitrate and transfer speed.

The side buttons are also made from semi-transparent plastic and the only metallic part is the shirt clip which is permanently attached to the main body. is a Bluetooth sink device and provides the supported codec list to the source device at the beginning. Please ensure you provide a valid phone number for us to contact you should verification of your identity be required. It's true that the connected headphones have been low impedance IEMS or low or medium impedance earbuds. On the upper side is the brand name, logo, slogan, where it was manufactured (Korea) and the different guarantee certificates.The Parametric EQ is always much more complex and requires some knowledge and time to use but allows a more precise customization of the sound.