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Topping Pre90 Preamplifier & Ext90 Input Extender Hi-Res Audio NFCA Modules 2RCA 4XLR Combination (Silver, Ext90)

Pre90 adopts full balanced structure. The output can be balanced, sin- gle- ended, balanced + single- ended.
With the balanced + single-ended two-way input, in addition to the normal preamplifier usetage
Pre90 can be used for "balanced to sin- gle- ended" orsingle -ended to balanced" signal conversion.
With the help of maximum gain +16 dB, Pre90 could easily amplify the weak input signal to acceptable level of next amplifier.
It is worth men- tioning that since the noise is as low as 0.3uVrms, this step does not bring in audible noise while amplifying the signal.

Overview

Specs

Reviews

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Pre90/EXT90 parameters (@IN= 5Vrms Vol=0dB)
THD+N
SE IN/SE OUT <0.00007%
BAL IN/SE OUT <0.00007%
SE IN/BAL Out <0.00007%
BAL IN/BAL OUT <0.00007%

@1kHz A-wt
SE IN/SE OUT <0.0003%
BAL IN/SE OUT <0.0003%
SE IN/BAL Out <0.0003%
BAL IN/BAL OUT <0.0003%

THD @20-20kHz 90kBW
SE IN/SE OUT124dB
BAL IN/SE OUT124dB
SE IN/BAL Out124dB
BAL IN/BAL OUT124dB

SINAD @1kHz A-wt
SE IN/SE OUT141dB
BAL IN/SE OUT137dB
SE IN/BAL Out145dB
BAL IN/BAL OUT138dB

Dynamic Range @ 1kHz A-wt
SE IN/SE OUT141dB
BAL IN/SE OUT137dB
SE IN/BAL Out145dB
BAL IN/BAL OUT138dB

Frequency Response
SE IN/SE OUT20Hz-100kHz(+ 0.1 dB)
BAL IN/SE OUT20Hz-100kHz(+ 0.1 dB)
SE IN/BAL Out20Hz-100kHz(+ 0.1 dB)
BAL IN/BAL OUT20Hz-100kHz(+ 0.1 dB)

OutPut Level
SE IN/SE OUT25Vpp
BAL IN/SE OUT25Vpp
SE IN/BAL Out50Vpp
BAL IN/BAL OUT50Vpp

AP measured noise level @A-wt:
SE IN/SE OUT <0.7uVrms
BAL IN/SE OUT <0.7uVrms
SE IN/BAL Out <0.9uVrms
BAL IN/BAL OUT <0.9uVrms

Actual noise level*@A-wt:
SE IN/SE OUT <0.3uVrms
BAL IN/SE OUT <0.3uVrms
SE IN/BAL Out <0.6uVrms
BAL IN/BAL OUT <0.6uVrms

Channel Crosstalk @1kHz
SE IN/SE OUT-130dB
BAL IN/SE OUT-137dB
SE IN/BAL Out-140dB
BAL IN/BAL OUT-140dB

Channel Balance:
SE IN/SE OUT+10dB- -60dB ± 0.5 dB
BAL IN/SE OUT+10dB- -60dB ± 0.5 dB
SE IN/BAL Out+16dB- -60dB ± 0.5 dB
BAL IN/BAL OUT+16dB- -60dB ± 0.5 dB

IMD CCIF @( 18kHz+ 19kHz)
SE IN/SE OUT-115dB
BAL IN/SE OUT-115dB
SE IN/BAL Out-115dB
BAL IN/BAL OUT-115dB

IMD SMPTE @(60Hz+ 7kHz)
SE IN/SE OUT-115dB@SMPTE 4:1
BAL IN/SE OUT-115dB @SMPTE 4:1
SE IN/BAL Out-115dB@SMPTE 4:1
BAL IN/BAL OUT -115dB@SMPTE 4:1

Input Sensitivity
SE IN/SE OUT 9.2V rms @0dB
BAL IN/SE OUT 9.3V rms @0dB
SE IN/B

Warranty & Returns

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Item#: 9SIBR2DKGH1028