DIYRE CP5 Colour Mic Preamp vs MP568C Colour Mic Preamp – Comparison Page

 

The DIYRE CP5 and the MP568C are the colour mic preamps. This page compares the main features and highlights the difference between both units. This page should be treated as the guide for the website visitors and the FAQ section.

The main features of the DIYRE CP5 and MP568C colour mic preamps are presented and compared in the table below.

 

FEATURE

DIYRE CP5

HRK MP568C

MIC INPUT YES YES
DIRECT INPUT NO YES
GAIN RANGE 20-66 dB 12-65dB (MIC or DI)
GAIN CONTROL MULTI-DETENT (21) POTENTIOMETER POTENTIOMETER – NO DETENTS
MIC PREAMP INTEGRATED CIRCUIT THAT CORP. 1512 DISCRETE CLASS A / TEXAS INSTRUMENT NE5532
NOISE PERFORMANCE NOT PROVIDED EIN: -129dB at +65dB of Gain
PAD YES NO
PHASE REVERSE YES YES
+48V YES YES
COLOUR MODULE SLOT 1 2
OUTPUT BALANCED ELECTRONIC BALANCED ELECTRONIC

The Mic Input Circuitry.

Both preamps use the electronic balanced mic input circuitry. The DIYRE CP5 uses the specialised THAT Corp. 1512 mic preamplifier, all-in-one integrated circuit capable of delivering up to +66dB of gain. The MP568C uses the hybrid, discrete class A transistor input stage and the Texas Instruments, industry standard, NE5532 dual opamp. The transistor stage provides the low noise performance, while the operational amplifier provides the DC stability and the gain capability up to +65dB.

The CP5 has the multi-detent potentiometer gain control which mimics the rotary switch. The MP568C has the smooth operation gain potentiometer – no detents. In both preamps, the accuracy of the matching between units depends on the tolerance of the gain potentiometer.


The Direct Input.

The DIYRE CP5 does not provide the direct input feature. The MP568C has the direct input on the front panel. The gain of the MP568C DI is controlled by the main gain knob.


PAD, Phase Reverse and Phantom Power.

Both units have the Phantom Power switch and LED indicator. Same goes for the phase reverse feature. The DIYRE CP5 has the PAD attenuator feature which helps to process high-level input signals, especially that the minimum gain of CP5 is 20dB. The MP568C doesn’t have the PAD feature and the minimum gain is 12dB. The PAD function was not implemeted in the MP568C as the result of the design decision to improve the THD+N performance of the unit.


Colour Modules section.

The DIYRE CP5 has the single colour module slot and the drive/cut colour module control knob. The CP5 has the HUE Colour LED and the colour bypass switch.

The MP568C has two colour module slots and the single colour modules output level knob. The saturation of the colour modules can be controlled by the main gain knob. Colour modules are connected in series. Each colour module has the HUE LED and the bypass switch.

The main difference between the CP5 and the MP568C is the approach to the use of the colour modules. The CP5 has the dual gang potentiometer, the drive/cut knob which adds extra gain after the mic input stage. This knob drives the colour module and attenuates the signal from the colour module providing the result similar to Colour Palette.

The MP568C uses the mic input gain knob to control the colour drive level. More mic input gain results in more colour module drive. It is a similar situation like in the vintage mic preamps. The design of the MP568C aims to reduce the active stages and provide ultra low noise and low THD performance. The Level knob controls the output level from the colour modules and overall MP568C output level.


The THD and Noise Performance.

The DIYRE website does not provide info about the overall noise performance of the CP5. The use of the THAT 1512 chip, which is the copy of the Texas Instruments INA217 chip, suggests that the overall noise performance should in the region of at least -126dB EIN at a maximum gain in full bandwidth. The CP5 has the additional gain stage in the colour module section, providing the additional gain up to +16dB, which may worsen the initial noise performance of the CP5. The DIYRE website does not provide the information about the THD performance

The MP568C has the discrete transistor class A mic input stage optimised for low noise operation. The overall noise performance is -129dB EIN at a maximum gain in full bandwidth with the 150R noise source at the input. The colour module section does not have the additional gain stage. The design of the MP568C follows the wire-with-gain philosophy. The THD at the +65dB of Gain is less than 0.07% @ 1kHz in 80kHz measurement bandwidth.


The Price Comparison.

The DIYRE CP5 is available in two versions. The DIY KIT for 150USD and the assembled unit for 250USD. The CP5 is shipped from the USA.

The MP568C is available only as the assembled product for 159USD. The MP568C is shipped from the Europen Union.

 

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