HOLO Audio Bliss Fully Balanced Headphone Amplifiers Volume Control RCA XLR Output Input

Bliss is divided into two configurations.

L1 is the basic configuration. There is no remote control. This configuration has a higher cost-effectiveness.

The power transformer of L2 has been changed to a flat copper wire winding system, with customized nano fuses used. The four decoupled capacitors of the power supply have been changed to non-polar capacitors of Kuaiqing. The connection between the power socket and the power board is made of pure silver wire. The sound of this configuration is slightly richer than L1. Equipped with remote control. The photo shows L2 configuration.

Bliss is a product based on Qing's structure that is deeply optimized for driving headphones. It inherits the excellent performance of the previous stage of Qingqing, while also retaining clear and transparent, authentic and natural timbre. In low impedance mode, Bliss can provide up to 12W@32ohm Power. It can be well matched with some low sensitivity and low impedance earphones that have abnormal requirements for driving force, providing sufficient driving force while maintaining a delicate and warm tone. For some high impedance earphones, Bliss can also be set to high impedance mode for more matched driving.

Bliss follows our classic "eight pack abdominal muscle" structure, with eight fully discrete amplification modules forming two stages of buffering and amplification, each stage consisting of four channels forming a fully balanced left and right vocal tract structure. Although this greatly increases cost and design complexity, this structure provides extremely strong robustness, providing good performance within its control regardless of the coordination with any front-end and back-end devices, power supply status, and listening volume.

We have used a large number of twin transistors in the design of the amplification module to address some of the usually unnoticed performance (confidentiality) of transistors through structural design. In actual listening experience, it can be found that Yue does not resemble a stone machine due to its lack of dry and thin tone, nor does it resemble a gallbladder machine due to its lack of warm and greasy tone. You may need to listen to Yue for yourself to understand what this kind of tone is like, free from the constraints of conventional stone and bile machines.

Bliss adopts 84 levels of stepper volume control, each level being one db, providing high-precision volume control from -72db to+12db. The matching degree of the left and right channels is within+-0.1db in all volume ranges. Bliss's gain control and volume control are mixed together and optimized internally. Users do not need to consider these details, and the internal control will select the appropriate gain and volume based on the current state.

In addition, Bliss has a fully independent structure starting from the transformer secondary, which is a dual mono amplifier placed in a single chassis, so it has a performance of full frequency>120db in terms of channel separation, allowing for complete reproduction of the sound field. In terms of testing performance, Bliss provides a SINAD of>120db, a dynamic range of>140db, and various aspects of performance are approaching the limit. We are not committed to running points, and providing extreme testing performance is just a foundation that a good engineering design should have, and it is our responsibility to do so. We won't go into more detail here.

Input ports: 2 sets of XLR and 1 set of RCA

Line output: 1 set of XLR, 1 set of RCA

Earphone output: 4P XLR, 4.4mm Pentaconn, 6.35mm TRS

Size: 430mm (width) * 300 (length) * 55 (height, without connecting the machine foot), the machine foot height is 12mm

Weight: 11 kilograms