Audio Interfaces
Behringer U-Phoria UM2, U-Phoria UMC202HD
Centrance MixerFace R4
Roland Rubix22
Steinberg UR22 MK2

Multichannel Audio Interfaces compatible with Avisoft-RECORDER
Behringer UMC1820
M-Audio M-Track Eight
Roland UA-1010, UA-1610

High-Speed Data Acquisition Boards compatible with Avisoft-RECORDER
Avisoft-UltraSoundGate
National Instruments

Portable Recorders
Roland R-07
Marantz PMD561, PMD661 MKIII
Olympus LS-P1
SONY PCM-A10, PCM-D10
Sound Devices MixPre-3
Tascam DR-05, DR-701D, DR-70D
ZOOM H2, H4, H4n, H5, F4, F6, F8

See the page on Audio Compression Effects, why MiniDisk or MP3 recording formats can be problematic for subsequent in-depth analysis of broad-band and high-pitched sounds.

See the Recorder Test page for information on the microphone Input noise of various field recorders.

Microphones
AKG
Audio-Technica
DPA microphones
Neumann
Rode
Sennheiser
Shure
Schoeps
Telinga

For information on the distortion added by parabolic microphones see Frequency response curves of parabolas.

Ultrasound measurement microphones with metal diaphragms

Brüel & Kjær
G.R.A.S
Larson-Davis
Microtech-Gefell

Hydrophones

Brüel & Kjær
Cetacean Research Technology
G.R.A.S
High Tech Inc
Teledyne RESON

Microphone Pre-Amplifiers
M-AUDIO Audio Buddy and DMP3 (stationary 2-channel preamps)
Shure FP23 (portable)
Sound Devices MP-1 (portable)
RME QuadMic, OctaMic

Laptop / Tablet Computers
Acer
Asus
Dell
Fujitsu
HP
Lenovo
Panasonic
Samsung
Sony
Toshiba

Methodological Advice
Avisoft Bioacoustics Tutorial: Sound recording in the field