Control One

The Monitor Controller

with innovative features, developed for fast workflow and impressive sound quality.

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Monitoring in highest sound quality.
Create perfect mixes on speakers and also on headphones – thanks to the Phonitor Matrix.

number one in sound

For us the sound is always in the foreground. When it sounds good, we like to listen. To get such a sound, you need experience and technical finesse. We have incorporated both into the Series One.

“The SPL Control One is very well suited for smaller studio setups or post-productions where a simple, analog monitor controller is needed. Despite its flat format and basic features, it offers a classy sound that should normally only be expected from more expensive devices.”

Amazona

Full control

The big analog volume control offers the perfect control range to adjust the monitoring volume intuitively and precisely.

Speaker & Subwoofer – monitoring without any compromises

As a full-fledged monitor controller, Control One offers two pairs of outputs for stereo speakers.
You can listen to your production via two switchable pairs of speakers. A subwoofer is also switched on and off with speaker pair A.

In the middle position of the switch, the speakers are switched off, which is convenient because you don’t have to turn the volume control back.

Two stereo inputs

Control One provides two analog stereo inputs for input devices such as DA converters, CD players, microphone preamps, synthesizers or an analog tape machine.

“Considering the high sound quality and a level of manufacturing that deserves the label ‘Made in Germany’, the price asked is more than justified. Well done, SPL!”

Sound & Recording

Line Out

The signal selected in the input section is output unchanged at the line output “Line Out”.

The line output has unity gain, the normal, unregulated output level – independent of the volume control.

Multiple users can listen in via additional headphone amplifier connected to the Line Out.

The Control One can also be easily looped into a monitoring chain without the need for another output at the playback source.

You can also send the signal to another mixer for further processing.

There are no limits to creativity here.

Perfectly monitored

Control One allows three different monitoring modes.
The mix can be monitored in “Stereo” or mono compatibility can be checked in “Mono”.

A special feature is the channel swap function:

L/R > R/L

This function reverses the stereo image. Left becomes right and right becomes left.

This is especially important and extremely time-saving when you are searching your sound library for samples in video dubbing that should match a scene with direction of movement.
If the direction is not correct, you usually have to load the sample into the DAW to switch channels before you can hear if the sample fits. With the L/R > R/L function this is no longer necessary. You can now simply swap the direction of movement while prelistening samples in the library.

The headphone output stage

Weak sound on headphones?
Not enough power?

Not here. Control One delivers a full headphone sound – and that up to really loud.

The output stage of the headphone amplifier is designed as a push-pull amplifier in class AB mode. The bipolar transistors share the amplification of the positive and negative half-waves, which produces a higher gain and a higher output voltage than in Class A operation, where only one transistor amplifies both half-waves.

The output stage transistors are thermally coupled and thus run particularly coherently, which contributes to a consistent and stable sound image.

The power supply has a buffer circuit with low source resistance, ensuring generous current reserves even when operating low-impedance headphones.

“Plug it in, let’s go – the analog operation of Control One and Marc One is superbly implemented and the sound is on the highest level. Studio technology for your home! The uncomplicated use in combination with the USB interface makes the Marc One in particular the perfect companion for high-quality audio enjoyment without having to rob the bank.”

Bonedo

The revolution in the headphone amplifier: Phonitor Matrix

The Phonitor Matrix enables mixing and mastering engineers to create perfect mixes on headphones, which will translate perfectly to all types of stereo speaker systems.

With Phonitor Matrix you can create
perfect mixes on headphones.

But the Phonitor Matrix is not only designed for professional use in the studio.
It also enables the hifi enthusiast to enjoy music on headphones, like if it was played back on speakers.

How is this possible?

Music is normally produced and mixed for playback on stereo speakers.

Listening on headphones is different from listening on loudspeakers. The biggest difference is the lack of crossing signals of the sound signal from the left speaker to the right ear and from the right speaker to the left ear.

These crossing signals are missing in conventional headphone listening, because there are no signals crossing from one side of the headphones to the other. This results in an unnaturally wide stereo stage and sound sources are not played back at their correct position in the stereo spectrum.

The SPL Phonitor Matrix can correct this false stereo image with an analog circuitry.

The Phonitor Matrix parameters

The two main parameters of the Phonitor Matrix are Crossfeed and Angle:

• Crossfeed determines the crossing signals of the channels.
• Angle determines the opening angle of the stereo image.

The “Crossfeed” parameter of the Control One is continuously adjustable via the crossfeed control.
The “Angle” parameter is fixed at the studio standard of 30°.

To perfect the listening experience, the level of the sound sources centered in the stereo image must be attenuated when the Phonitor Matrix is activated. The result is that not only the position of all sound sources is correctly located, but also their volume.

For the Control One, this parameter, which we call “Center” for the Phonitor Matrix, is fixed at a -1 dB cut, which is the best choice for an authentic representation of the soundstage.

During conventional listening on headphones, our brain can compensate a certain level of false playback representation – but this is very exhausting and leads to listening fatigue.

Summed up:

The SPL Phonitor Matrix corrects the false representation of the stereo sound image, which makes it much easier to find the right decisions for mixing and mastering engineers. The hifi enthusiast can experience the music, like it was originally mixed and recorded.

So nothing stands in the way of a successful and long mixing session on headphones.

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Everything you need to know about the Phonitor Matrix
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Everything you need to hear about the Phonitor Matrix

Perfectly adjusted

At a regular listening volume, the volume control should be in the one o’clock position. This gives you an ideal control range for listening quieter and louder.

If active loudspeakers or power amplifiers are very sensitive, the playback can already be quite loud when the volume control is in the first third of its control range.

Activating the -10 dB DIP switch attenuates the output level to allow a wider usable range of the volume control.

Power Supply

Good sound always starts with the power supply. This is where you lay the foundation for the performance of the entire device. Although we “only” supply a 12 V plug-in power supply unit, the secondary power supply inside generates a voltage level of +/-17 Volts for the analog audio sections with which professional levels of up to +22.5 dB can be achieved!

An elaborate low-drop operating voltage regulation provides more “juice” and regulates cleanly even when the maximum operation voltage is reached.

The Control One delivers full power when used with the included 1.5 A power supply.

Just switch it on and enjoy the great sound. The ON-switch puts the Control One into operation.

Number One in Sound

With the Series One – just as with all other SPL devices – we develop not only according to plan, but also by ear from the very beginning.

Many important components are installed on the circuit boards using Through-hole technology. This way we can ensure that we can use the best sounding components.

Home is where the heart is

That’s why we manufacture all devices in our own production facility in Niederkrüchten on the Lower Rhine, Germany.

Videos

SPL Control One und Marc One

Reviews

Bonedo
Sound & Recording
Amazona

Other Series One products

Manual

Comparison Chart

Specifications

Analog inputs & outputs; 6.35 mm (1/4") TRS Jacks

Input gain (max.)
+22.5 dBu
Line Input 1 (balanced): Input impedance
20
Line Input 1: Common mode rejection
< 60 dB
Line Input 2 (unbalanced): Input impedance
10
Output gain (max.): Speaker Outputs (600 Ω)
+22 dBu
Line Output (unbalanced): Output impedance
75 Ω
Speaker Output 1 (balanced): Output impedance
150 Ω
Sub Output low filter
none (Full Range)
Sub Output (balanced): Output impedance
150 Ω
Speaker Output 2 (unbalanced): Output impedance
75 Ω
Frequency range (-3dB)
10 Hz - 200 kHz
Dynamic range
121 dB
Noise (A-weighted, 600 Ω load)
-99 dBu
Total harmonic distortion (0 dBu, 10 Hz – 22 kHz)
0.002 %
Crosstalk (1 kHz)
< 75 dB
Fade-out attenuation
-93 dB

Headphones Output; 6.35 mm (1/4") TRS Jack

Wiring
Tip = Left, Ring = Right, Sleeve = GND
Source impedance
20 Ω
Frequency range (-3 dB)
10 Hz - 200 kHz
Noise (A-weighted, 600 Ω)
-97 dBu
THD + N (0 dBu, 10 Hz – 22 kHz, 600 Ω)
0,002 %
THD + N (0 dBu, 10 Hz – 22 kHz, 32 Ω)
0,013 %
Max output power (1 kHz, 600 Ω)
2 x 190 mW
Max output power (1 kHz, 250 Ω)
2 x 330 mW
Max output power (1 kHz, 47 Ω)
2 x 400 mW
Fade-out attenuation (600 Ω)
-99 dB
Crosstalk (1 kHz, 600 Ω)
-75 dB
Dynamic range
117 dB

Internal Power Supply

Operating voltage for analog audio
+/- 17 V
Operating voltage for headphone amplifier
+/- 19 V
Operating voltage for relays and LEDs
+ 12 V

Netzteil extern

AC/DC switching adaptor
Mean Well GE18/12-SC
DC plug
Innen-Pin 2,1mm (+); Außen-Ring 5,5mm (-)
Input
100 - 240 V AC; 50 - 60 Hz; 0.7 A
Output
12 V DC; 1.5 A

Dimensions & Weight

W x H x D (width x height incl. feet x depth)
210 x 49.6 x 220 mm
8.23 x 1.95 x 8.66 inch
Unit weight
1.5 kg
3.3 lbs
Shipping weight (incl. packaging)
2 kg
4.4 lbs

Reference: 0 dBu = 0,775V. All specifications are subject to change without notice.

ProAudio
HiFi
ProAudio
HiFi

Calculation of VAT (value added tax)

All prices are displayed by default including the VAT of your country.

If your country cannot be determined via geolocation and you are not logged in as a user with the billing address of your country, the prices are displayed including the VAT of Germany (19%).

What does it actually mean …

In Stock!

The product is in stock in our warehouse in Niederkrüchten, Germany, and will be shipped the same or next working day.

We process the orders after receipt of the order and update the stock in the online shop regularly. If the product is no longer available at short notice due to high order volume, you naturally have the right to withdraw from the purchase (see Right of Withdrawal).

In any case, you will receive an e-mail with details of the delivery and the estimated delivery time.

Available soon!

The product is not in stock in our warehouse in Niederkrüchten, Germany. Usually it will be available again within 5 working days.

Due to the current pandemic and the associated worldwide shortage of components, delivery times may be significantly delayed in some cases.

In any case, you will receive an e-mail with the details of the delivery and the estimated delivery time.

Of course you have the right to withdraw from your purchase (see Right of Withdrawal).

Currently unavailable.

This product is currently sold out and unavailable.

Was bedeutet eigentlich …

Auf Lager!

Das Produkt ist in unserem Lager Niederkrüchten vorrätig und wird noch am selben oder nächsten Werktag versendet.

Wir arbeiten die Bestellungen nach Bestelleingang ab und aktualisieren den Bestand im Online-Shop regelmäßig. Falls das Produkt wegen hohem Bestellaufkommens kurzfristig nicht mehr verfügbar ist, hast du selbstverständlich das Recht, vom Kauf zurückzutreten (siehe Widerrufbelehrung).

In jeden Fall erhältst du eine E-Mail mit den Einzelheiten der Lieferung und der voraussichtlichen Lieferzeit.

Bald verfügbar!

Das Produkt ist in unserem Lager Niederkrüchten nicht vorrätig. Gewöhnlich ist es innerhalb von 5 Werktagen wieder verfügbar.

Aufgrund der aktuellen Pandemie und der damit verbundenen weltweiten Bauteileverknappung kann sich die Lieferzeit z.T. stark verzögern.

Auf jeden Fall erhältst du eine E-Mail mit den Einzelheiten der Lieferung und der voraussichtlichen Lieferzeit.

Selbstverständlich hast du das Recht, vom Kauf zurückzutreten (siehe Widerrufbelehrung).

Zur Zeit nicht verfügbar.

Dieses Produkt ist derzeit ausverkauft und nicht verfügbar.

Product Condition

A-Stock

Brand-new product from the current product portfolio.

B-Stock

Demo, exhibit or return item.
In original packaging, incl. manuals and full warranty.
Only slight to no signs of use.

C-Stock

Demo, exhibit or return item.
In original packaging, incl. manuals and legal warranty.
In some cases clear signs of use, which are documented in photos.

NOS

"New Old Stock"
After discontinuation of a product still available new products with full warranty.

Events

Due to Covid19 there are no events scheduled at this time.

Events

Aufgrund von Covid19 sind derzeit keine Events geplant.

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