Rating: 4.8
The Sound of SPL GoldMike | Alberto Caltanella
The Sound of SPL GoldMike Mark 2 preamplifier.
- Signal Chain
- SPL GoldMike Mk2 Dual Channel Preamp
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Call Us Toll Free888-528-9703
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Local/International (+1)919-682-5552
- Call Us! Toll Free! 888-528-9703
- Local / International (+1) 919-682-5552
SPL GoldMike Mk2 Dual Channel Preamp From SPL
The GoldMike Mk2 combines the advantages of Class A transistor amplification with tube amp technology.
$1,499.00
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Manufacturer's Description from SPL
Class-A meets Tube
The GoldMike Mk2 is a hybrid preamplifier consisting of a discrete transistor stage and tube stage. The hybrid design of the preamplifier combines the advantages of semiconductors (high dynamics with low distortion, low noise) with the musical qualities of tube sound (pleasant high/overtone spectrum, beautiful three-dimensionality).
The microphone class A transistor preamplifier is discretely constructed from 16 individual transistors.
The preamplifier features 48 V phantom power, polarity inversion, padding and a Butterworth Hi Pass filter.
Instrument
The instrument input is a discrete impedance converter that also operates in class A mode.
The core is a low-noise field-effect transistor, which is ideally suited as an impedance converter due to its very high input resistance.
Insert
A compressor, de-esser, limiter or even a reverb unit can be switched between preamp and output.
VU
The VU shows the audio “energy” level, the clip LED warns of clipping. If optional AD converters are installed, the AD OVL LED also warns of converter overloads.
Limiter
The limiter is based on diodes whose characteristic curve produces a nice, analog saturation effect and thus unobtrusively limits the signal peaks.
Its speed makes it suitable as a peak limiter, which can intercept transients in the microsecond range and can thus function very well as protection for the AD converter.
Flair
This circuit uses the pleasant sound characteristics of the coils in combination with the tube to emphasize the presence range. It is ideally suited to intensify the overtone range of voices and acoustic instruments, thus improving the ability to cut through in the mix.
Tube Amp
The proportion of tube gain to total gain can be switched in three stages. The higher the value, the more pronounced are the saturation effects and overtones of the tube.
Options for the GoldMike Mk2
Lundahl Transformers
The Sonic Aspects
Transformers are used as an alternative to electronic balancing stages in the inputs and outputs.
Transformers can be found in many classics of audio engineering. They make the bass and fundamental tines rounder and give it a little more punch. The high and overtone range sounds a bit silkier and more present.
We find transformers to be advantageous, especially for voices. For highest precision and speed in signal transmission (transient processing), however, electronic stages are better suited. The bottom line is that it is a question of taste and application.
In the Mic Preamplifier
In the case of preamplifiers or channel strips, the 2161 input transformer, which is specially designed for microphone inputs, provides an additional gain of up to 14 dB (depending on the microphone), which must then be added to the scaling.
This relieves the microphone preamplifier. Since the transformer ratio passively increases the level, no noise is added. Therefore, the input transformer is more important than the output transformer in preamplifiers.
However, it is only when both transformers are fitted that all positive sonic aspects are achieved – as well as increased operational reliability.
AD Converter Module 1090
The 24 bit converter module provides an SPDIF output which is available as coaxial and optical output.
The internal sampling rate can be set with switches to 44.1, 48, 88.2 and 96 kHz. Other sampling rates (32, 176.4, 192 kHz) can only be set with an external synchronization signal.
About Manufacturer
Sound Performance Labs! Full Range of Analog, Tube, and Digital rack gear with an innovative twist. With their most famous transient designer product, SPL has quickly become a household name in both the recording and live sound arenas.
Specifications
Line/Insert inputs & outputs; XLR (balanced) & Jack (unbalanced)
Maximum input gain
23 dBu
Input impedance
10 dBu
Maximum output gain (balanced)
26,8 dBu
Maximum output gain (unbalanced)
21.5 dBu
Output impedance
50 Ω
Common mode rejection (1 kHz, 0 dBu)
70 dB
Frequency range (-3 dB)
10 Hz – 90 kHz
THD + N (0 dBu, Line Gain unity, Tube Gain +6 dB, 10 Hz – 22 kHz)
0,04 %
Noise (A-weighted, 600 Ω)
-88,5 dBu
Dynamic range
110 dB
Microphone Preamplifier
Maximum input gain (Mic)
7 dBu
Maximum input gain (Mic, PAD)
28 dBu
Input impedance (Mic)
2.8 kΩ
Frequency range (Tube Gain +6 dB, -3 dB)
10 Hz – 93 kHz
Frequency range (Tube Gain +12 dB, -3 dB)
10 Hz – 61 kHz
Frequency range (Tube Gain +18 dB, -3 dB)
10 Hz – 34 kHz
THD + N (1 kHz, 30dBu Gain)
0.016 %
Noise (A-weighted, 150 Ω, 30 dB Gain)
-91.2 dBu
E.I.N.
-128 dBu
Dynamic range
110 dB
Instrument Preamplifier
Maximum input gain (Instrument)
7 dBu
Maximum input gain (Instrument, PAD)
14 dBu
Input impedance (Instrument)
1 MΩ
Frequency range (Tube Gain +6 dB, 600 Ω, -3 dB)
10 Hz – 68 kHz
Frequency range (Tube Gain +12 dB, 600 Ω, -3 dB)
10 Hz – 51 kHz
Frequency range (Tube Gain +18 dB, 600 Ω, -3 dB)
10 Hz – 35 kHz
THD + N (Tube Gain +6 dB, 10 Hz – 22 kHz)
0,05 %
Noise (A-weighted)
-95.5 dBu
Dynamic range
105 dB
Internal Linear Power Supply with Toroidal Transformer
Operating voltage for analog audio
+/- 18 V
Operating voltage for relays and LEDs
+12 V
Tube anode voltage
+250 V
Tube heating voltage
+12,6 V
Phantom power
+48 V
Mains Power Supply
Mains voltage (selectable)
230 V AC / 50; 115 V AC / 60 Hz
Sicherung für 230 V
T 315 mA
Sicherung für 115 V
T 630 mA
Power consumption
max. 25 W
Dimensions & Weight
W x H x D (width x height x depth)
482 x 88 x 300 mm
19 x 3.46 x 11.8 inch
Unit weight
4.1 kg
9.04 lbs
Shipping weight (incl. packaging)
6.5 kg
14.33 lbs
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