People long for Telemak4 with an integrated recorder, to come. Meanwhile, we offer a low cost recorder for backup on your favorite smartphone: the one designed in California and assembled in the special area of Shenzen.
The two-track signal (line out) from Telemak3 connects to the smartphone by means of Tascam iXJ2 adapter. This little device is built around a Cypress PSoC3 linked to the smartphone (MFi protocol), an A/D converter AK5357 from Asahi Kensai, and analog amplifiers NJM4580 from New Japan Radio.
The iXJ2 attaches to the 30-pin dock of the smartphone (4/4S), of the tablet (1, 2, 3) or of the player (Touch 4) from the same manufacturer. The iXJ2 is powered via the socket, and works very well with the smartphone 5 with the dedicated Lightning-to-30-pin adaptor.
The inputs of the iXJ2 are analog, unbalanced, on 1/8" minijack socket. Signal can be at either at line level (+6 dBu max) or at microphone level (-40 dBu). Simply adjust the input gain potentiometers. Maximum gain is 56 dB. Sampling is at 16 bits with a maximum frequency of 48 kHz.
The iXJ2 can be controlled by several softwares, all available on the App Store. The Tascam PCM Recorder app is free, but sampling is until now limited to 44.1 kHz. Check regularly for updates.
Tascam PCM Recorder graphical interface is nice and intuitive, and reminds the Tascam DR-100 design. File transfer is easy via the music software (you know which, version 10 or above), or by Wi-Fi via the cloud, but we don't recommend that: risky and time consuming.
FiRe 2 (5 euros) from Audiofile Engineering is another application (recently acquired by RØDE Microphones) which offers various sampling frequencies, the setting of multiple parameters, editing possibilities, the display of the waveform and easy export to WAV format.
We also found out that iXJ2 is compatible with many other audio editing softwares dedicated to music, radio or voice recording, such as Nano Studio, Twisted Wave, Reactable, Hindenburg, etc...
We only regret some listening discomfort (on the smartphone headphone jack) due to the delay introduced by the multiple conversions and signal processing.
The iXJ2 is equipped with an USB port, not for updating firmware or transferring files, but only for charging the smartphone while recording.
Eventually, you can connect microphones to the Tascam iXJ2. We recommend high output level electret mikes, as iXJ2 inputs are unbalanced. That's good enough for voice or sneaky wild track/atmo recording. The bias voltage (2.5 V) is high enough for Sanken COS-11, but is too low for powering DPA 4060.
Telemak3 and iXJ2 are both available, together or separately, for sale and for rent from DC Audiovisuel.