Nutube Evaluation Board II NEB-2
A board that can select 4 levels of Nutube harmonics
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Nutube harmonics can be selected.(4 levels of distortion: approximately [1]:0.015%, [2]: 0.1%, [3]: 0.3%, [4]: 1%)
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Equipped with a switch that allows bypassing the Nutube.(Easy switching between “with” and “without” Nutube.)
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Equipped with an output volume control Nutube VOLUME so it can be used as a Nutube buffer.
Specifications
Max Input Level: +2 [dBu] Measured at 6V BIAS voltage *It varies depending on the Nutube BIAS setting.
Max Output Level: +12 [dBu] Measured at 6V BIAS voltage *It varies depending on the Nutube BIAS setting.
Max GAIN: +10 [dB] Measured at 6V BIAS voltage *It varies depending on the Nutube BIAS setting.
Frequency: response 20 [Hz]~40k [Hz]
SN ratio: 100 [dB] *It varies depending on the Nutube BIAS setting.
Connections Input: RCA x 2 *Input Impedance 10k [Ω]
Connections Output: RCA x 2 *Output Impedance Less than 50k [Ω]
Controls: Nutube VOLUME x 1, 4 Types Tone Select SW x 1 (LEFT / RIGHT), [Nutube – BYPASS]SW x 1, BIAS ADJ x 2 (LEFT / RIGHT)
Power Supply: DC12V AC adapter or External power supply (+7V ~ +20V, Recommend:12V)
* Made in South Korea
Documents
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User Guide / Circuit Diagram / Parts List（PDF/2.0MB）
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Block Diagram / Reference: Distortion vs. Input Level / Appendix: Adding an input volume control（PDF/373KB）
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Circuit Diagram（PDF/1.7MB）
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Pattern Diagram（PDF/1.6MB）
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Board Size（PDF/32KB）
Modification Example: Additional input volume
