diff --git a/ivas_processing_scripts/processing/ivas_combined.py b/ivas_processing_scripts/processing/ivas_combined.py
index 6ab837945a15adc9271adb7e07c0a0ad466a6f82..b737490759338111ec7e2ba420fb2b7e90192061 100755
--- a/ivas_processing_scripts/processing/ivas_combined.py
+++ b/ivas_processing_scripts/processing/ivas_combined.py
@@ -137,15 +137,15 @@ class IVASCombined(Processing):
         logger.debug(f"IVAS {in_file.absolute()} -> {out_file.absolute()}")
 
         # split into objects and spatial files
-        in_file_objects = in_file.with_suffix(f".objects{in_file.suffix}")
-        in_file_spatial = in_file.with_suffix(f".spatial{in_file.suffix}")
+        in_file_objects = out_file.with_suffix(f".objects{in_file.suffix}")
+        in_file_spatial = out_file.with_suffix(f".spatial{in_file.suffix}")
 
         in_audio, fs = read(in_file)
         write(in_file_objects, in_audio[:, : self.in_fmt.num_ism_channels], fs)
         write(in_file_spatial, in_audio[:, self.in_fmt.num_ism_channels :], fs)
 
-        out_file_objects = out_file.with_suffix(f".objects{out_file.suffix}")
-        out_file_spatial = out_file.with_suffix(f".spatial{out_file.suffix}")
+        out_file_objects = out_file.with_suffix(f".objects.ivas{out_file.suffix}")
+        out_file_spatial = out_file.with_suffix(f".spatial.ivas{out_file.suffix}")
 
         in_meta_objects = in_meta[: self.in_fmt.num_ism_channels]
         in_meta_spatial = in_meta[self.in_fmt.num_ism_channels :]
@@ -161,11 +161,6 @@ class IVASCombined(Processing):
         out_audio_objects, fs = read(out_file_objects)
         out_audio_spatial, fs = read(out_file_spatial)
 
-        # combine outputs, with gain factor if OSBA
-        if isinstance(self.in_fmt, audio.OSBAAudio):
-            out_audio_objects *= 0.5
-            out_audio_spatial *= 0.5
-
         out_audio = out_audio_objects + out_audio_spatial
 
         write(out_file, out_audio, fs)