BTR (Balanced Transient Response) Technology
VoltCel addresses a commonly overlooked problem through its Balanced Transient Response (BTR) technology: the severe nonlinear response prevalent in power supplies. In testing, this nonlinearity leads to significant asymmetry in the response graphs to fluctuations, specifically between positive and negative signals.
Overlooked Power Supply Technology Problem
Audiophiles are often misled by the impressive technical specifications of a few electronic components. For example, the Analog Devices LT3045 voltage regulator (LDO) boasts an impressive 0.8uV noise level, widely accepted in the high-end audio market. However, using it to power sensitive DACs or preamps doesn't produce particularly outstanding sound.
There's a diagram like this in a corner of an IC technical manual.
This graph shows a alarming voltage jump in the output voltage when the load current changes. The upward jump is approximately 25mV, and the downward jump is approximately 13mV. Furthermore, the energy of the upward jump (the area covered in the graph) is approximately 10 times that of the downward jump.
Therefore, we can conclude that this LDO has a significant dynamic nonlinearity problem. And simply comparing the two figures, 25mV is a staggering 31,250 times greater than the previous 0.8uV!
This nonlinearity is forcibly introduced into the audio system by the power supply with a low internal impedance of much less than 1 ohm, resulting in a huge impact on sound quality.
BTR (Balanced Transient Response) Technology
BTR is an exclusive Eleven Audio technology that addresses one of the most overlooked limitations of conventional power supplies: transient response asymmetry.BTR actively equalizes these transient behaviors, maintaining symmetrical response characteristics regardless of load variations or power demand fluctuations. The power supply is therefore able to track dynamic changes with exceptional precision, producing an output that closely mirrors the instantaneous requirements of the connected equipment.The result is greater dynamic integrity, improved micro-detail retrieval, and a more natural presentation of music.Through BTR technology, VoltCel establishes a more stable and precise power supply foundation for the entire audio system, fully unleashing the potential performance of the equipment.
How It Works: Inside the BTR Circuit Design
High-performance audio amplifiers have excellent linear response performance, but their circuit structure is very complex.
However, standard audio amplifier circuits are completely unsuitable as the basic circuit architecture for power supplies because audio amplifiers cannot drive capacitive loads. Michael Xiao, the founder and designer of Eleven Audio, combined his deep understanding of analog circuits with his expertise in the stability theory of automatic control systems to design a completely new power supply circuit architecture that possesses both excellent linear response and the ability to drive capacitive loads. This is BTR (Balanced Transient Response) technology.