It is possible to connect a line output to JAM, however the output must be unbalanced. JAMʼs input can be driven up to 14dBu unbalanced and it is recommended that the output device be set to a -10dBv reference output level. If the output level is +4dB referenced, it is recommended to be cautious with the amount of output gain being sent to JAM. (6-10 dB below maximum output level). Examples of line output sources may be, mic preamps, mixing consoles, outboard signal processing equipment, etc.
To play along through JAM with your music on iPad/iPhone, you’ll need to have the latest versions of GarageBand and iOS software installed. Select the desired song and begin playback BEFORE opening GarageBand.
Unlike similar products, JAM and MiC are digital audio interfaces. These devices transform the analog signal of your voice or instrument into a digital signal that can be seen by an iPad, iPhone or Mac. For this delicate transition from analog to digital, Apogee has designed special high quality circuitry that preserves the true tone of the sound source so when you record into software like GarageBand, you are hearing the best possible representation. We call this, PureDIGITAL.
A Line-matching Transformer is an adapter with a female XLR connector on one end and a male 1/4” connector on the other. This transformer converts the low-impedance signal of a microphone to high-impedance for connecting to a device like JAM. In this process, the transformer is providing additional gain for optimal signal level.
Also Called: Impedance Matcher, Impedance Transformer
JAM is optimized for electric instruments, like guitar and bass specifically. However, with its 40 dB of input gain, JAM can be used with certain dynamic microphones using an XLR to 1/4” cable or adapter. We have tested both Shure SM57 and SM58 dynamic microphones and each worked well when recording loud sources such as a singer. We recommend you purchase an impedance matching transformer if you choose to use JAM for vocals.
Additionally, since JAM is a guitar interface, Phantom Power (48v) is not included. Condenser microphones which require Phantom Power will not work unless they have their own built-in power supply, such as a battery. It should be noted even with a built-in power supply, the amount of gain available is more suited to instruments rather than microphones.
You can connect any instrument with a 1/4” output to JAM. Electric guitar, bass, acoustic guitar with pickup, keyboards with a mono output, violin with a pickup etc. Our tests show that low impedance dynamic microphones can work well when you use a line transformer.
Yes. JAM will work with your Mac computer as long as it meets the system requirements listed below.
Intel based Mac computer
Mac OS 10.6.4 or greater
YES! JAM is compatible with iPod Touch. JAM can be connected to the new Lightning connector on iPod Touch (5th generation) when used with Apogee’s new Lightning cable or Apple’s Lightning to 30-pin adapter.
If you already own JAM and do not have the Lightning cable, you can purchase one from the Apogee online store (USA only) or your local distributor.
Note: With iPod Touch 4th generation, GarageBand does not offer simultaneous recording and playback, thus limiting JAMs functionality. This means you will be unable to hear your input source or previously recorded tracks while recording. JAM can be used with iPod Touch 4th generation and certain third party applications that do not offer software monitoring capabilities.
For the list of JAM compatible apps, please click here.