THE PUREST WAY OF EXPERIENCING PERFECT MUSIC
The vinyl disc, dinosaur of music recording formats, just barely survived the CD. Today, however, the quality of turntables, tonearms, and cartridges has increased to unprecedented levels, which analog-recording producers support by pressing higher-quality discs in limited quantities. This means new challenges as well as new opportunities for phono preamplifiers.
The only consistent way to process the delicate music signal from a moving-coil cartridge is with a balanced Current Injection (CI) input, as the cartridge’s signal is among the most sensitive an audio amplification circuit will encounter. Using CI, the current of the moving coil flows through the phono preamplifier, including the first half of the RIAA equalization. The result is a level of dynamics, impact, and spaciousness and a richness of color that surpass the performance of step-up transformers as well as the usual voltage inputs.
B.M.C.’s use of virtually distortion-free circuits with a Current Injection input and a Load-Effect Free output brings to listeners an advanced musical experience — exceptionally lifelike, open and natural.
Combining the CI input with a low-impedance moving-coil cartridge gives new meaning to the phrase “dynamic system.”
MORE INFORMATION?
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MCCI Signature ULN
Balanced Moving Coil Phono Amp
DESCRIPTION
New: ULN (Ultra Low Noise) version with unmatched signal-to-noise ratio.
The B.M.C. MCCI Signature ULN is a balanced, passively equalized moving coil (MC) preamplifier lacking negative feedback. It features natural distortion-free and Load-Effect Free single-ended Class A output and a Current Injection input, which optimally reads the signal current of the moving coil cartridge.
When amplifying a signal from an MC type cartridge, the interaction between the MC cartridge and the input is a critical element, due to the very small MC signal output and its electromechanical characteristic. Let us compare the traditional voltage input with the CI current input in terms of signal strength, damping, and amplification:
ULN Advantage:
Already the predecessors of the MCCI Signature ULN were considered to deliver a very low noise floor and, according to the German Stereo, even “close to the laboratory record”. On top of that the new ULN version delivers another dramatic improvement in noise. This is important because it represents the main disadvantage of MC cartridges, which is now completely eliminated since only the remaining noise of the empty groove represents the limit of silence.
Amplifier Circuit
1. Balanced Current Injection input.
2. Common base circuit for highest bandwidth.
3. “Automatic” gain adjustment.
4. Feedback-free circuit with a short signal path.
5. Fully balanced circuit.
6. Balanced LEF single-ended Class-A output.
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