RECORDING

¶    controls

* easy to use
* most controls are via touch screen

"One issue with the gain knobs is that there are only two, so if you're recording more than 2 channels, some levels will be set via the menus. Recording stereo, though, they work great."
    https://moonblink.info/FieldRecording/gear/rolandr26

on body:
    * gain knobs
    * ###

on screen:
    * ###

¶    channels

"""
The R-26 can record from up to three of these pairs at once, in other words 6 tracks.  But that's not as useful as it sounds, as the three pairs would all be different kinds of mics.  It can be useful for comparisons, or for capturing a subject in multiple ways at once (...) But there are only 2 gain knobs.  So, for most practical purposes, it's really a versatile 2-channel recorder.

¶    electronic noise

"""
The self-noise of the R-26 — in other words, the hiss it adds to recordings — is very low; this is one of the nice things about it. 
However, and unfortunately, it has a nasty habit of adding internal electronic noise to recordings, at least in my experience.
This is very intermittent, and seems only to happen with certain mics. It can also be quite subtle.  So it's quite hard to pin down. In fact I first saw this 8 years ago, but only recently figured out it was the R-26!  (I didn't run into this for a long time because I was using Sennheiser mics (MKH8040, MKH30) which don't seem to hit this problem.)
The clearest manifestation of this is a regular "heartbeat", consisting of a very low-frequency "pulse" occurring at regular intervals.  The interval is just over 2 seconds when recording 24-bit stereo at 48 kHz; it changes at different sample rates.  I believe this is the data being written to the SD card.  You can hear it through the headphones; at first I thought it was a pile driver in the distance, until I found the identical pulse on a recording made days later and 50 miles away.  I got this with the AT BP4025 mic; it only came on after a few minutes' recording, and then got gradually louder, and sometimes fainter.
"""

¶    battery consumption

"""
Battery life is good; recording from an AT BP4025 stereo mic, with phantom power, I got just over 7 hours from a new set of Eneloop Pro AA batteries.  Of course, not being able to supplement this from a USB power pack is a serious drawback.
"""
    https://moonblink.info/FieldRecording/gear/rolandr26

¶    external power

*  set final voltage!
"""
When using an external power supply, be sure to set the final voltage. The final voltage refers to the voltage when voltage can no longer be supplied
because the capacity of the external power source is reduced and voltage decreases as electricity is consumed. If the final voltage is not properly set for the external power source, the remaining power display cannot be shown. Refer to the user's manual of the external power supply for the final voltage value.
"""

https://www.manualslib.com/manual/670903/Roland-R-26.html?page=23

¶    compatible brands

"""
The following Battery Power Supplies have been verified to work properly on the R-26:



* 1: You can select the final voltage of an external power supply on the [MENU]→[SYSTEM SETUP]→[EXT-POWER].
 (Please refer to the "Using External Power Sources" section(P.23) of the owner's manual for details.)
* 2: An additional attachment is required for connecting to the R-26. Refer to the user's manual for the external power source.
"""

    https://rolandus.zendesk.com/hc/en-us/articles/201977909-R-26-Which-Brands-of-External-Battery-Power-Supplies-are-Compatible-


* " Since R-44 and R-26 use reverse polarity, the center pin of the plug is negative."
    → https://taperssection.com/index.php?topic=162256.0

      Bixnet (9V)
    "You might want to check out this battery it is straight 9v so no messing around with anything for the correct voltage and it does but out 2 amps. I like that they rate it at the 9v output to give you a honest idea on how long it will last. You would need to get a reverse polarity cable made.
    →  http://www.bixnet.com/bx948.html"

    Battery Geeks (9/12V) — Bixnet BP160  — Tekkeon MP3450 
    """
    i use the Battery Geeks 9/12-66 (http://www.thebatterygeeks.com/BG-9-12-66-Portable-DVD-Player-Battery-p/9-12-66.htm) with my R-44 and love it.  it has a 9v and a 12v setting via a switch on the back of the battery.  the R-44 will run on either the 9v or 12v setting with no difference in performance.  it's also pretty light and doesn't take up much space in the bag.
i also recently picked up a Bixnet BP160 (http://www.bixnet.com/unpowbat.html), but haven't used it in the field as of yet.  it has a 12v and a 19v switch on the top so it's compatible with the R-44 on the 12v setting.  the 19v setting can be used to charge your laptop (if that's a desirable option for you).  the Bixnet holds a lot more juice than the Battery Geeks 9/12-66, but the Bixnet is also HUGE and will take up a lot more space in your bag.    

the Tekkeon MP3450 could also be a good option (http://www.bhphotovideo.com/c/product/503090-REG/Tekkeon_MP3450_MP3450_myPower_ALL_Universal.html).  it has multiple power options from 5v to 19v, but some recorders (i.e. Tascam DR-680) don't play nice with the Tekkeon.  i've never used mine with the R-44 so i don't know if there have been any issues.  i primarily use my Tekkeon to power my Aerco MP-2 on the 7.4v or 9v settings and it works great.  i have also found that the Tekkeon is great for powering my vaporizer  at shows, so it is definitely a versatile battery. 
    """
    
    $$$$


* [→] ordering external power adapter?

~20€ | PwrON AC to DC Adapter for Roland R-26 R26 6-Channel Portable Field Audio Recorder, R-44 R44 Solid State 4 Channel Portable Field Recorder Power Supply Cord
https://www.amazon.com/Adapter-6-Channel-Portable-Recorder-Channel/dp/B06XHJBH7P

¶    format
:
    * digital
    * analog

¶    location / occasion
:
    fieldrecordings
    studio