Mine

Input format: PCM16 3/2.1 (5.1) 48000
User format: PCM16 - 0
Output format: SPDIF 3/2.1 (5.1) 48000

Use SPDIF
  SPDIF status: AC3 encode
  SPDIF passthrough for: MPA AC3 DTS
  Use AC3 encoder (do not encode stereo PCM)
  Do not check SPDIF sample rate
  Query for SPDIF output support

Decoding chain:
(PCM16 3/2.1 (5.1) 48000) -> Processor -> (Linear PCM 3/2.1 (5.1) 48000) -> Encoder -> (AC3 3/2.1 (5.1) 48000) -> Spdifer -> (SPDIF 3/2.1 (5.1) 48000) -> Dejitter -> (SPDIF 3/2.1 (5.1) 48000)

Filters info (in order of processing):

Processor:
(PCM16 3/2.1 (5.1) 48000) -> PCM->Linear converter -> (Linear PCM 3/2.1 (5.1) 48000) -> Input levels -> (Linear PCM 3/2.1 (5.1) 48000) -> Mixer -> (Linear PCM 3/2.1 (5.1) 48000) -> Bass redirection -> (Linear PCM 3/2.1 (5.1) 48000) -> AGC -> (Linear PCM 3/2.1 (5.1) 48000) -> Delay -> (Linear PCM 3/2.1 (5.1) 48000) -> Output levels -> (Linear PCM 3/2.1 (5.1) 48000)

Encoder:
-

Spdifer:
Stream format: AC3 3/2.1 (5.1) 48000Hz
Bitstream type: byte stream
Frame size: 2560
Samples: 1536
Bitrate: 640kbps
SPDIF stream type: 0x1
Frame interval: 2560
Actual bitrate: 640kbps
Output format: SPDIF 3/2.1 (5.1) 48000Hz
SPDIF format: wrapped
Bitstream: 16bit LE
Frame size: 6144

Dejitter:
-