Meet the Universal Buffer: A reference class analog preamp, made in Canada.
The Universal Buffer is an ultra high-end stereo analog subsystem. Each channel of the Universal Buffer features a differential input (which, by jumpers, can be configured as a single-ended input), and provides a buffered differential output and a buffered single-ended output. Its gain can be changed from the default 0 dB (unity) by adding a resistor. Furthermore, it can be configured for signal inversion.
The reference class performance of the Universal Buffer is exemplified by its 137 dB dynamic range, abysmally low distortion (including intermodulation distortion), ultra-low noise, 130+ dB channel separation, high common-mode rejection ratio, as well as its ability to drive significant cable capacitance cleanly. All measurements of the Universal Buffer support my claim that this buffer is sonically transparent, and that any contribution to the sound quality made by the Universal Buffer is orders of magnitude below the audible threshold.
The Universal Buffer was primarily conceived as one piece of a reference class preamp. For example, a volume pot followed by a Universal Buffer would form a simple one-input preamp with both differential/balanced and single-ended/unbalanced outputs. Add another Universal Buffer upstream of the volume pot to add a differential input.
Similarly, the Universal Buffer can be used to add a differential input or output to your existing source or load, thus, it completely replaces my previous THAT Driver and THAT Receiver circuits.
Except for the connectors, the Universal Buffer is all surface mounted components. Furthermore, two of the ICs have exposed pads under the IC package, thus, are challenging to solder. A good connection is needed for good performance. Due to this, I will only be offering the Universal Buffer as a fully assembled module.
The first batch of Universal Buffer boards is in production. I expect to have the boards in stock and ready to ship by January 20th, 2020. I have opened up for preorders. I will offer volume discounts for order quantities of 3+, 5+, and 10+.
For the full specifications and to preorder your Universal Buffer, please follow this link: Universal Buffer – Neurochrome
The image shows the final prototype. The production version will be identical, except it will be Neurochrome Blue like my other boards. The circuit design, PCB manufacturing, and PCB assembly were all done in Canada.
Tom
The Universal Buffer is an ultra high-end stereo analog subsystem. Each channel of the Universal Buffer features a differential input (which, by jumpers, can be configured as a single-ended input), and provides a buffered differential output and a buffered single-ended output. Its gain can be changed from the default 0 dB (unity) by adding a resistor. Furthermore, it can be configured for signal inversion.
The reference class performance of the Universal Buffer is exemplified by its 137 dB dynamic range, abysmally low distortion (including intermodulation distortion), ultra-low noise, 130+ dB channel separation, high common-mode rejection ratio, as well as its ability to drive significant cable capacitance cleanly. All measurements of the Universal Buffer support my claim that this buffer is sonically transparent, and that any contribution to the sound quality made by the Universal Buffer is orders of magnitude below the audible threshold.
The Universal Buffer was primarily conceived as one piece of a reference class preamp. For example, a volume pot followed by a Universal Buffer would form a simple one-input preamp with both differential/balanced and single-ended/unbalanced outputs. Add another Universal Buffer upstream of the volume pot to add a differential input.
Similarly, the Universal Buffer can be used to add a differential input or output to your existing source or load, thus, it completely replaces my previous THAT Driver and THAT Receiver circuits.
Except for the connectors, the Universal Buffer is all surface mounted components. Furthermore, two of the ICs have exposed pads under the IC package, thus, are challenging to solder. A good connection is needed for good performance. Due to this, I will only be offering the Universal Buffer as a fully assembled module.
The first batch of Universal Buffer boards is in production. I expect to have the boards in stock and ready to ship by January 20th, 2020. I have opened up for preorders. I will offer volume discounts for order quantities of 3+, 5+, and 10+.
For the full specifications and to preorder your Universal Buffer, please follow this link: Universal Buffer – Neurochrome
The image shows the final prototype. The production version will be identical, except it will be Neurochrome Blue like my other boards. The circuit design, PCB manufacturing, and PCB assembly were all done in Canada.
Tom
Attachments
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UNIBUFF_Proto_1p1.jpg -
UniBuff_ Distortion Residual (1 kHz, 2 V RMS, UNBAL-UNBAL, 256k FFT, 8 averages).PNG -
UniBuff_ THD+N vs Output Level, Supply Voltage (1 kHz, 20 kHz BW, BAL-BAL).PNG -
UniBuff_ THD+N vs Frequency (2 V RMS, 60 kHz BW, BAL-BAL).PNG -
UniBuff_ Multi-Tone IMD (AP 32-tone, 2.0 V RMS, Ref._ 2.0 V RMS).png -
UniBuff_Transient_DIFF_4n7.png -
UniBuff_Transient_DIFF_1n0.png -
UniBuff_Transient_SE_10n.png -
UniBuff_Transient_SE_4n7.png -
UniBuff_Transient_SE_1n0.png
