The OpAmp Rolling is a practice that consists of changing the operational amplifiers of the DAC/DAP/AMP to improve or modify the sound. And when it comes to OpAmp Rolling the first brand that comes to mind is Burson Audio. It is difficult to find such a clearly enthusiastic company in this field, achieving excellent levels of practice. The latest version of their OpAmp is the V6 and is the result of 12 years of research, concluding that they are the most refined chips they have created. The great peculiarity of these chips is that they are totally...

Introduction Tanchjim is a brand from China, established in 2015, according to its logo. The Cora model is the lowest priced IEM that the brand has in the market. Other models of the same brand are Darkside and Oxygen. The Cora wants to be a model with a fun philosophy, young and casual, proof of it is its packaging, its design and the multiple colors to choose. Although it seems very simple, there is much more research and development behind it than can be seen at first glance: both the materials used, the design of the capsules, its interior...

Introduction The LZ A6mini is a cheaper version of the Flagship of the Chinese brand LZ Audio, the LZ A6, from which all BA drivers have been removed. These are hybrid IEMs with a 10mm dynamic driver and a ceramic piezoelectric driver for each capsule. The shape is practically identical to its big brothers, but without Loud button. Comes with three filters to be able to modify the sound: Blue (Hi-res): Bandwidth: 15Hz - 35kHz. Filter frequency: 3kHz - 7kHz. Boost +3dB Black (Balanced): Bandwidth: 15Hz - 35kHz. Filter frequency: 3kHz - 7kHz. No...

Introduction The OH1 are IEMs manufactured by Ikko, a brand based in China, totally unknown and new to me. Looking for information about it I found that it is a recent brand, which has only one product, the OH1, although they say they have quite a lot of experience. My interpretation of their philosophy is that they try to integrate their products in the current digital era, through their particular conception of design, trying to maximize sound quality to offer the best musical experience. Specifications · Type of Drivers: 1 DD + 1 BA. ·...

Purchase link: https://www.bursonaudio.com/products/playmate/ Introduction: Burson Playmate is a headphone amplifier, pre-amplifier and DAC. It is capable of delivering 2W at 32 Ω. It uses the DAC Sabre 9030, is able to decode DSD 512 and is compatible with Windows. IOS, OSX and Android. One of the main features of this amplifier is the power supply used by Burson Audio: the Max Current Power Supply (MCPS), totally designed to reduce the problems related to the transformation of AC to DC. First, Burson has eliminated the use of transformers, to...

Purchase link: https://penonaudio.com/anew-u1.html Link to the Store: https://penonaudio.com/ Specifications: Driver unit: 10 mm Dynamic Driver carbon nanotube diaphragm Frequency response: 20Hz - 20kHz Sensitivity: 108±1dB Impedance: 32Ω THD: < 0.2%. Plug: 3.5mm gold-plated Capsule connection type: MMCX Cable length: 12cm symmetrical design Packaging The IEMs are packed in clean white packaging, wrapped in transparent film and sealed. Only the brand logo is shown on the front. On the back there is a silver sticker with the...

Purchase link: https://es.aliexpress.com/store/product/NICEHCK-P3-In-Ear-Earphone-2BA-1DD-Hybrid-3-Unit-HIFI-Earbud-Headset-Monitor-IEM-3/1825606_32959211726.html Store link: https://es.aliexpress.com/store/1727211?spm=a219c.12010108.0.0.64663e61Vrr4DV Presentation and personal tastes I have been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But more than 15 years ago I work as a programmer of production control systems based on artificial vision. The sound profile that I like...

Purchase link: https://penonaudio.com/audirect-beam-usb-dac.html Link to the Store: https://penonaudio.com/ Presentation and personal preferences I've been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But for more than 15 years I have been working as a programmer of production control systems based on artificial vision. The sound profile I like could be represented as ¬. I like bass (the sub bass above all), forward voices and soft trebles, but that provide a lot of clarity, separation...

Purchase link https://penonaudio.com/bqeyz-kb100.html https://es.aliexpress.com/item/BQEYZ-KB100-1-armadura-equilibrada-2-din-mico-conductor-h-brido-2pin-0-78mm-extra-ble/32945806646.html Link to the Store https://penonaudio.com/ Presentation and personal preferences I've been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But for more than 15 years I have been working as a programmer of production control systems based on artificial vision. The sound profile I like could be represented...

Purchase link: https://es.aliexpress.com/store/product/NICEHCK-M6-In-Ear-Earphone-4BA-2DD-Hybrid-6-Unit-HIFI-Metal-Earphone-Earbud-Headset-Monitor/1825606_32955034092.html Link to the Store: https://es.aliexpress.com/store/1825606 Presentation and personal preferences I've been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But for more than 15 years I have been working as a programmer of production control systems based on artificial vision. The sound profile I like could be...

Presentation and personal preferences I've been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But for more than 15 years I have been working as a programmer of production control systems based on artificial vision. The sound profile I like could be represented as ¬. I like bass (the sub bass above all), forward voices and soft trebles, but that provide a lot of clarity, separation and detail. I like the natural sound, full of air and nuances, as well as enjoying a great stage and...

Presentation and personal preferences I've been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But for more than 15 years I have been working as a programmer of production control systems based on artificial vision. The sound profile I like could be represented as ¬. I like bass (the sub bass above all), forward voices and soft trebles, but that provide a lot of clarity, separation and detail. I like the natural sound, full of air and nuances, as well as enjoying a great stage and...

The new DAP xDuoo, the second version of the successful X3, is a very useful multi-functional player: USB DAC. Bidirectional Bluetooth 4.0, aptX protocol support. DSD128. Bidirectional USB port, device supports OTG, USB Audio output function, DOP, D2P output mode. DAC AK4490. IPS Screen 2,4”. It can be controlled remotely by using the buttons on the earphone. 10 bands equalizer. SD until 256MB. Line Ouput. Car Mode. Hiby Link. 13 hours long life battery. OpAmp used OPA1652+LMH6643. Disclaimer: I bought this DAP at the end of July 2018 at the...

Purchase link: https://es.aliexpress.com/item/2018-NICEHCK-EB2-Earbud-HIFI-auriculares-de-Metal-14-8mm-conductor-din-mico-auriculares-NICEHCK-segunda/32917468583.html Store link: https://es.aliexpress.com/store/1825606 Presentation and personal tastes I have been an electronic technical engineer for 20 years. I studied that career because my great passion was Hi-Fi. But more than 15 years ago I work as a programmer of production control systems based on artificial vision. The sound profile that I like could be represented as ¬. I like the...

Thanks to the kindness of Carlos from Burson Audio I have been able to test the excellent OpAmp V5i-D in two compatible devices that I own: the Zishan Z3 and the FX-Audio DAC-X6. About me: I am an industrial technical engineer, industrial electronic specialty for 20 years. My passion for Hi-Fi made me choose those studies. Then my professional career was on the other hand, towards the programming of control systems based on artificial vision. Although not my passion for audio decreased. Currently portable audio is one of my hobbies to which I...