The Shift Line Twin MkIIIS is the third revision of our tube guitar preamplifier which boasts a characterful sound, universal connectivity, and a compact enclosure.
The dynamic range has been expanded to achieve more maximum gain. As a result, it can go from its renowned clean sound into crunch and overdrive without external boosting. The cabinet simulation is based on the Impulse Response Convolution technology, which provides a realistic and detailed sound while preserving the character of the power amp, cabinet and microphone used to record the impulse. The device comes with two impulses recorded from the Fender Twin combo amplifier. The microSD card slot allows users to upload their own cabinet impulses.
Connections:
- IN is the signal source input.
- THRU is a buffered output for the unprocessed signal split from the IN jack.
- SEND/RETURN is a series effects loop for external processing. The SEND out can also be used as an additional output.
- OUT is the main output designed to connect the preamplifier to a power amplifier (RETURN or POWER AMP IN on combo amplifiers, INPUT on power amplifiers).
- AUX IN is an external audio input (the signal from the AUX IN is only heard through the PHONES output).
- PHONES is a headphones output.
- BALANCED OUT is a balanced output.
- POWER IN is a power supply input. The power requirements are 12V DC 650mA.
- MicroSD is a microSD card slot.
Controls:
- GAIN controls input signal amplification. It can go from a crystal-clear sound all the way to a classic California-style overdrive.
- The BASS, MIDDLE and TREBLE knobs constitute a classic 3-band passive EQ with a mild frequency correction effect.
- MASTER controls the volume of the signal coming from the OUT jack.
-
VOLUME controls the volume of the signal coming from the PHONES and BALANCED OUT jacks.
The MASTER and VOLUME knobs work independently. - The TOP switch controls the signal’s high frequency harmonic content. The “+” position accentuates the highs and the attack. The “-” position provides a milder sound by cutting the high frequencies. The neutral position does not affect the signal in any way.
- The GNDswitch allows to override “ground loops” that can negatively affect the signal when using XLR connections. In the lower position of the switch, the preamp’s “ground” is connected to the signal receiver’s “ground”. In the middle position, the “grounds” are disconnected. In the upper position, the “grounds” are connected and an additional filter is used to remove interference.
The optimal setting of the GND switch is selected by ear: there should be a minimum amount of 50Hz hum and interference. - The CAB switch selects one of the two built-in cabinet impulses recorded from a Fender Twin combo amplifier with two JBL D120F speakers:
• The “A” position selects the impulse recorded by a LOMO 19A19 microphone placed 15cm away from the edge of the speaker’s protective cap.
• In the middle position, cabinet simulation is disengaged.
• The “B” position selects the impulse recorded by a Sennheiser e609 microphone placed 25cm away from the center of the speaker.
When using a microSD card, impulses are loaded from the corresponding folder on the card. The CAB switch affects the signal from the BALANCED OUT and the PHONES OUT but does not affect the signal from the main OUT.
Loading impulses from a microSD card:
When the memory card is used for the first time, a “SL_IR” folder is automatically created on it. The folder contains two more folders (“A” and “B”, corresponding to the CAB switch positions) in which the default impulses are stored. To use external impulses, replace the default ones with your own files. The supported impulse format is 24bit 48kHZ WAVE PCM1, uncompressed.
To restore the default impulse files, insert a blank microSD card into the device. This will create a “SL_IR” folder containing the default files. If no card is inserted, the built-in impulses are used.
Specifications:
- Tube type: 12AX7
- Memory card type: microSD
- IR latency: 1,2ms
- IN: 6,3mm, mono, unbalanced, -20dB, 1MOhm input impedance
- THRU: 6,3mm, mono, unbalanced, -20dB, 1kOhm output impedance
- SEND: 6,3mm, mono, unbalanced, -10dB, 1kOhm output impedance
- RETURN: 6,3mm, mono, unbalanced, -10dB, 1MOhm input impedance
- OUT: 6,3mm, mono, unbalanced, +20dB, 1kOhm output impedance
- BALANCED OUT: XLR, mono, balanced, +10dB, 1kOhm output impedance
- AUX: 3,5mm, stereo, unbalanced, 0dB, 10kOhm input impedance
- PHONES: 3,5mm, stereo, unbalanced, +10dB, 10Ohm output impedance
- POWER: 12V DC 650mA, negative tip, 2.1/5.5mm diameter. Phantom power of the balanced line (+48V) or battery power are insufficient for the preamp to operate on. If phantom power is turned on, it will not damage the device. Use a regulated PSU only.
- Dimensions (LxWxH): 124x104x55mm (4.9×4.1×2.2″)
- Unit weight: 480g (1.06lb)
- PSU weight: 120g (0.26lb)
Professionally packed and fast shipping
Our long-standing relationships with UPS FedEx DHL and other global carriers gives us the ability to provide a range of shipping services. Our warehouse staff is highly skilled and will package your items in accordance with our exact and exact specifications. Prior to shipping your items will be thoroughly examined and secured. Everyday, we send to thousands of customers across multiple countries. This shows that we're committed to be the largest retailer on the internet. Both Europe as well as the USA have warehouses and distribution centres.
Orders that include more than 1 item are given processing time in accordance with the item.
Prior to shipment, we examine the items ordered carefully before shipping. The majority of orders today are shipped in 48 hours. It is expected that delivery will take between 3 and 7 days.
Returns
The inventory is always changing and we cannot completely manage it because of the fact that several stakeholders are involved, including our warehouse and factory. The levels of stock can change at any given time. Please be aware that it is possible for your order to become unavailable even after you have placed the order.
Our policy lasts for a period of 30 days. If you don't receive the product within the 30 days period, we are not able to provide a refund or an exchange.
Your item should be in its original packaging and in good condition. It must also not be used. It should also be in the original packaging.
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