diff --git a/common/setups/rasr/util/nn.py b/common/setups/rasr/util/nn.py
index c4a56085e..f2bfe364a 100644
--- a/common/setups/rasr/util/nn.py
+++ b/common/setups/rasr/util/nn.py
@@ -148,13 +148,15 @@ def get_crp(self, **kwargs):
 class OggZipHdfDataInput:
     def __init__(
         self,
-        oggzip_files: tk.Path,
+        oggzip_files: List[tk.Path],
         alignments: tk.Path,
         context_window: Dict,
         audio: Dict,
-        targets: str,
+        targets: Optional[str] = None,
         partition_epoch: int = 1,
         seq_ordering: str = "laplace:.1000",
+        ogg_args: Optional[Dict[str, Any]] = None,
+        acoustic_mixtures: Optional[tk.Path] = None,
     ):
         """
         :param oggzip_files:
@@ -172,6 +174,8 @@ def __init__(
         self.partition_epoch = partition_epoch
         self.seq_ordering = seq_ordering
         self.targets = targets
+        self.ogg_args = ogg_args
+        self.acoustic_mixtures = acoustic_mixtures
 
     def get_data_dict(self):
         return {
@@ -188,10 +192,11 @@ def get_data_dict(self):
                     "class": "OggZipDataset",
                     "audio": self.audio,
                     "partition_epoch": self.partition_epoch,
-                    "path": tuple(self.oggzip_files.get_path()),
+                    "path": self.oggzip_files,
                     "seq_ordering": self.seq_ordering,
                     "targets": self.targets,
                     "use_cache_manager": True,
+                    **(self.ogg_args or {}),
                 },
             },
             "seq_order_control_dataset": "ogg",