Qudelix 5K Reference DAC AMP

Product Information

I've been using it for almost two months on a daily basis, and yet - every time I want to press a button, I need to stop for a while, think, make sure it's the correct one, because it's so easy to mistake them. I want to thank Qudelix and especially the support staff for giving me the opportunity to try this product. I have no issue whatsoever with the construction, for me it is far better than the BTR5. The things I would say the BTR5 is better for is the buttons, they are bad on the Qudelix, and the screen on the BTR5 is handy, to be able to see volume and what it is connected to.

It's a shame Qudelix didn't try to somehow make them differ from each other - be it in shape, placement, etc.

Its construction is extremely compact, only two screws can be seen on the face where the USB connection is. Although, it is possible to see the slots and joints, these are either very small or are very well assembled and do not offer any sensation of weakness. Despite the simplicity of the form, the device has a very effective and functional design, more than striking or spectacular. Above all, its small size, weight (I repeat, 25g), as well as its efficient ergonomics and ease of use, stand out. For high-sensitivity IEMs, the amplifier noise figure is the most important. The high-sensitivity IEM is so sensitive that it translates every electrical noise or thermal drift into audible acoustic sound, usually white noise. Sound quality: no complaints here when using aptX Apdative or through my USB DAC, IEMs sound clean through them. What sets Qudelix apart is that the company is an official Sony LDAC technical partner. Reportedly Qudelix was responsible for developing the LDAC solution for the Qualcomm QCC5000 platform. The QCC5124 receiver, as seen in just about every higher-end Bluetooth DAC/amp, relies on the work done by Qudelix to operate using the LDAC codec.

The same principle applies to the 2.5mm output where the 2V RMS mode offers the full differential direct audio path that delivers the best linearity and separation, still with enough battery time, and the 4V RMS mode delivers the maximum output power.In addition to the output power mode option, Qudelix's proprietary software drives ES9219C DAC/AMP in two different ways, to trade off the battery time and Sound Quality. HIGH QUALITY BLUETOOTH CODEC: 5K supports the latest high-quality audio codecs, including aptX Adaptive, SONY LDAC, and AAC. Android 8.0 or higher supports LDAC by default. *iOS works with Bluetooth AAC 260kbps.

manages and stores the EQ presets in its internal flash memory and automatically reloads the settings at boot-up and resumes the same EQ setting as configured before.The bass is tight and controlled with excellent definition and layering but with a slightly lean and dry texture. BAND PRO GRADE EQUALIZER: The embedded pro-grade equalizer is a vital benefit of 5K DAC/AMP over other similar products. It processes every incoming source audio from everywhere: YouTube, Apple Music, Spotify, iOS, Android, PC, Bluetooth (all Codecs), and USB. For more degree of freedom, 5K DAC/AMP supports parametric EQ in addition to graphical EQ. The embedded DSP cores perform double-precision 64-bit EQ processing, providing accurate and precise frequency response. DUAL ES9219 DAC CHIP: The ES9219 Upgraded SABRE Hifi SoC delivers audiophile-grade sound quality and output power, allowing the ES9219 to drive the most demanding headsets and provide a real line-level output to match professional audio equipment. The heart of the ES9219 ESS's award-winning SABRE DAC technology, with a Hyper Stream II modulator. This is the same architecture that is used in the world's finest audiophile equipment.