SPL GoldMike MK2 Dual-Channel Preamplifier

SPL GoldMike MK2 Dual-Channel Preamplifier

SPL GoldMike MK2 Dual-Channel Preamplifier

SPL GoldMike MK2 Dual-Channel Preamplifier Back View

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  • 1Description

The 2485 GoldMike MK2 from SPL is a discrete, Class-A, transistor-stage, dual-channel microphone and instrument preamplifier. Like its predecessor, the GoldMike Mark2 retains a hybrid solid state and tube construction to combine the best of both worlds.

Available as an option is a 24-bit, 192 kHz A to D converter.

The rackmountable GoldMike MK2 has updated tonal flexibility and versatility, making it a useful dual-channel front end for almost any modern production environment.

The GoldMike MK2 is the result of all our experience and knowledge from its earlier predecessor and it represents an improved, more flexible and modernized version.

We have added technologies that have already been proven to provide improved tonal results in other SPL products. For example, the instrument input is designed around a Class-A impedance converter which premiered in the SPL GainStation.
A significant contribution to the success of the predecessor was the hybrid preamplifier concept. It combines transistor and tube preamplifier stages and specifically utilizes their technological and sonic advantages: The efficiency and low noise of a discrete transistor stage is enriched with musical coloration of a tube stage.

The transistor stage is composed of single transistors in a Class-A design. The circuitry is fully discrete, and each transistor is completely optimized for its specific task. You will not find any IC's in this preamplifier stage because they cannot be optimized for this specific application to the degree we at SPL aim for. The is a discrete Class-A transistor stage crafted specifically for this preamplifier.

The degree of tube pre-amplification is no longer the fixed +6 dB value of its predecessor. The GoldMike MK2 sports the selection of three different tube pre-amplifications: +6 dB remains the standard and is complemented by +12 dB and +18 dB. This allows creative variety with the tube saturation and limiting effects.Experiment as you wish to achieve the sounds you are looking for.

We have also added an extra setting to the popular Flair circuitry to give increased flexibility to the "presence" improvement.

Because the GoldMike MK2 is a dual-channel preamplifier, its channel separation is of fundamental importance for the stereo image. Therefore the print-board layout is symmetrically mirrored around the power supply in the center from channel 1 to channel 2. This results in an identical signal flow to supporting a naturally balanced stereo image. Additionally, the print board provides extra-large ground areas maximizing the shielding against crosstalk and interference.

Adjust the sound of your world with the GoldMike MK2.

Discrete Class-A solid stage
Tube-drive in three different intensity levels
2-Channel Class-A microphone and instrument preamplifier
Adjustable tube-preamplification circuitry
Flair presence enhancement in two switchable settings
Pre-output limiter stage (faster diode-based operation, for A/D converter protection)
Front-panel instrument input, separate rear-side microphone and line inputs
Phantom power, phase reverse, pad and high-pass filter (50Hz)
Switching inserts
VU metering with three different, switchable display ranges
Available as an option is a 24-bit, 192 kHz A to D converter.
In the Box
SPL GoldMike MK2 Dual-Channel Preamplifier
  • Limited 2-Year Warranty
  • Table of Contents
    • 1Description


    Number of Channels Two
    Frequency Response ‹10 Hz to 90 kHz (-3 dB)
    Input Impedances PER CHANNEL
    Microphone, XLR: 2.8 kOhms
    Line In, TRS: 10 kOhms
    Instrument In, TRS: 1 MOhm
    Output Impedance XLR and TRS: 50 ohms
    THD + N Input level -30 dBu, Gain 30 dBu: 0.016 %
    Input level -40 dBu, Gain 40 dBu: 0.017 %
    Input level -50 dBu, Gain 50 dBu: 0.022 %
    Input level -60 dBu, Gain 60 dBu: 0.048 %
    Noise A-weighted, R=40 ohms
    Gain 0dB: -91.2 dBu
    Gain 40 dB: -86.6 dBu
    Gain 50 dB: -78.7 dBu
    Gain 60 dB: -69.3 dBu
    Dynamic Range Gain 30 dB: 110 dB
    E.I.N. Microphone Preamplifier 128 dBu
    Ground Lift Yes
    Maximum Input Level Microphone, XLR: +7 dBu
    Microphone, XLR +PAD: +28 dBu
    Line In, TRS: +23 dBu
    Instrument In TRS: +7 dBu
    Instrument In TRS +PAD: +14 dBu
    Maximum Output Level Balanced, XLR+ TRS +26.8 dBu
    Unbalanced, XLR+ TRS +21.5 dBu
    CMRR 1 KHz, Gain 30 dB: ›75 dB
    10 KHz, Gain 30 dB: ›75 dB
    Phantom Power Yes, 48 V switchable
    A/D Converter An optional A to D converter is available
    Power Compatibility Switchable
    100 to 120 V / 60 Hz
    220 to 240 V / 50 Hz
    Fuse: 315 mA
    Power Consumption 25 W
    Dimensions (WxHxD) 19.0 x 3.5 x 8.3" (482 x 88 x 210 mm)
    Weight 9.0 lb (4.1 kg)


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