23425 
 
 
AVR10/AVR20/AVR30/AV40 Software Release Notes 
 
– 2 – 
Arcam, The West Wing, Stirling House, Waterbeach, CB25 9PB, UK  
 
 
Host Version 1v42/09 
LCD/IAP 0.79/0.04 
DSP1 02.03 / 02.11 
DSP2 00.01 / 00.23 
DTS/IMAX 3.90.50.1/390.508.2.0 
OSD 0.03 
DAB 303 / 561 
NET 0.100.794 
BT 0.7 (or higher, depending on build) 
 
Fix list: 
IMS20940: Downmix phono has no output for some input formats. 
IMS20969: Bitrate and dialnorm not reported for DD streams. 
IMS21033: Bass/treble controls (stereo) have no effect. 
IMS21591: Audio artefacts from Zone 2 output (use 6&7 for zone 2) when PCM 2 channel Fs changes. 
IMS21809: Sub/centre drop when changing modes with DTS HD-MA & Atmos on media players. 
IMS21844: No sub out after changing speakers – requires power cycle for new speaker config to take effect. 
IMS21924: Zone 2 no audio (use 6&7 for zone 2) if directly selecting an input (not follow zone 1). 
IMS22070: PCM files with different channel counts may not show correct channel count on track change. 
IMS22088: Change inputs while streaming on NET input, changes  
IMS22223: DTS HD-MA 6.1 only plays from left channel. 
IMS22224: Legacy DTS (768kps streams) have audio artefacts. 
IMS22302: Web GUI – front speakers forced to large with front subs unless surround left/right enabled. 
IMS22315: DD+ 5.1 with Auro-3D & DLBC has audio artefacts. 
IMS22317: Adjusting max on/off volume sliders in web gui while in NET standby disables IP control. 
IMS22322: 96kHz Dolby TrueHD distorted output. 
IMS22332: Test tone steering in Dirac level setting screen could be laggy. 
IMS22333: DTS CD > CD > DTS CD exchange would not play DTS audio. 
IMS22355: Dirac filter names with European characters not correctly displayed on web gui. 
IMS22356: Internet radio decoding error (e.g. Absolute Radio). 
IMS22359: Atmos can take 30 seconds to restore audio when switching Dirac filters. 
IMS22361: Skipping tracks / channels can cause audio dropouts. 
IMS22370: Podcasts >2.5hrs suffer audio dropouts. 
IMS22403: DTS HD-MA2.0 <> Atmos exchanges could cause audio loss.