Schatten Preamp-DI's
Single and Dual Channel Combination Preamp and DI's
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| Preamp-DI Plus Single Channel | Preamp-DI Max Dual Channel |
We are pleased to put our name on these
great combination Preamp and DI unit built by the Ultrasound Amplifier
folks. These incredibly versatile outboard units will give you
everything that you need to be able to play in pretty well any setting
or venue.
Extensively tested with our pickups, they will allow
you to plug your instrument into virtually any amplifier, P.A. system,
or mixer and sound terrific.
No more mis-matching impedance issues going into a
'strange' sound system. No more weak output and signal line-loss
issues due to the length of the mixer cables.
These combination Preamp and Impedance Matching units will do it
all for you.
Buy Now
Details
Preamp-DI Plus is a very powerful tool for any musician. It is not only a DI but a full featured preamp designed after Ultrasound's famous AG-series amps. Whether at a local open mic night or at a major concert venue, you will be able to dial in a clear natural acoustic sound and route it to the stage PA through a balanced XLR output. Sound engineers will appreciate the versatile controls and the optional 48-volt phantom power operation. Therefore, no more wall warts or batteries if your mixer has phantom power.
New Preamp-DI MAX is the most versatile instrument pre-amp on the market. With 2 independent channels, the DI MAX can be used as a blender as well as a pre-amp. The Channel-1 input will accept mono as well as stereo (TRS) inputs which allows the DI MAX to process the tip signal through the Channel-1 controls and the ring signal through the Channel-2 controls giving you an enormous amount of flexibility for creative signal blending from your stereo pickups. Of course you can plug 2 different instruments into the DI MAX and blend the signals. Channel-1 also allows the use of an XLR input so you can use the DI MAX as a personal mic pre-amp.
The DI MAX lets you dial in a clear, natural sound and route it to a stage PA from a balanced XLR output. A Line out sends the signal to your stage amp. Tone controls include active bass and treble EQ, mid-dip shape control, and phase switch. Operates on 48V phantom power, 9V adapter, or 9V battery.
Technical
Preamp-DI Plus Features: Full-featured single channel preamp and DI box Bulletproof metal housing Input gain control to allow proper setting for the huge variety of acoustic pickup output levels Balanced XLR output for routing the signal to a PA system 1/4 Line Out for sending the signal to a stage amp Both stage and PA outputs have their own level controls 48V phantom power capability Active bass and treble EQ Mid-dip shape control permits removal of honky frequencies Notch filter control to help eliminate feedback Phase switch to enhance overall sound and to help eliminate feedback. View instruction manual (pdf) |
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| Preamp-DI MAX Features: Full-featured stereo preamp and DI box Bulletproof metal housing Input gain control for each channel to allow proper setting for the huge variety of acoustic pickup output levels Balanced XLR output for routing the signal to a PA system 1/4 Line Out for sending the signal to a stage amp Both stage and PA outputs have their own level controls 48V phantom power capability Active bass and treble EQ for each channel Mid-dip shape for each channel control permits removal of honky Phase switch for each channel to help eliminate feedback. View instruction manual (pdf) |
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About Pickups and Amplification
Terminology
Passive Pickup - A piezo pickup.
Impedance - To simplify things as much as posssible we'll say that impedance refers to the range in which an amplifying device can 'hear' a pickup plugged into it.
Preamp - A device specifically designed for use with piezo pickups that increases the signal strength and lowers the impedance of a passive pickup.
Active Pickup - A piezo pickup with an attached preamp.
Microphone Preamp - a device that may be built into P.A.systems and mixers that is designed to work with microphones. These units will not generally work with passive pickups.
'Normal' Electric Bass Amps: A passive pickup has an impedance of approximately 2 mega ohms (2 million ohms) which virtually all 'normal' electric bass amps can generally handle without issue.
'Acoustic' Amps: may or may not require the use of a preamp with a pickup and that will depend upon whether or not there is a special built in preamp section to that amp that specifically allows for the choice in plugging in either a passive (non-preamped) or active (preamped) pickup. This choice is quite often in the form of pushbutton on the amp's control panel. Many acoustic amps show a selection that may indicate the choice of 'high impedance' and 'low impedance'.
Low impedance in these instances usually indicates that in this range the amp will handle an impedance of 1000 ohms or less - which will allow active pickups with preamps to be used.
High impedance in these instances may indicate an allowable impedance into the 2 or 3 mega ohm range - which will allow passive pickups to be used. Or it may indicate a maximum input impedance allowed of 20,000 ohms or less - which will handle magnetic electric guitar pickups but not passive pickups. You should carefully read the technical specifications of your acoustic amp in order to see what it will do.
P.A. Systems, Mixers: all of these units will require the use of a preamp between themselves and a passive pickup. Microphone preamps built into P.A.'s and mixers are not designed for use with passive pickups and will not work properly.
Computers: Due to the vagaries and variables inherent in the sound cards found in computers, the only thing that we can advise is that a preamp will almost certainly be necessary.
