diff --git a/experiments/selection_isar/BS1534-1a/config/BS1534-1a.yml b/experiments/selection_isar/BS1534-1a/config/BS1534-1a.yml
index 526748086d117cdf8f6a48023607fa2d035ecb93..b689ccd145cb9ea42ea1d3dcbf0e716d4d67cb4e 100644
--- a/experiments/selection_isar/BS1534-1a/config/BS1534-1a.yml
+++ b/experiments/selection_isar/BS1534-1a/config/BS1534-1a.yml
@@ -78,8 +78,9 @@ conditions_to_generate:
             fmt: "BINAURAL_SPLIT_CODED"
         split_rend:
             fmt: "BINAURAL"
-            bitrate: 512000
+            bitrate: 768000
             dof: 3
+            hqmode: 1
 
 ################################################
 ### Post-processing
diff --git a/experiments/selection_isar/BS1534-2a/config/BS1534-2a.yml b/experiments/selection_isar/BS1534-2a/config/BS1534-2a.yml
index 9503d0712f14ba68e142449685ef4eaac3070a75..84b9a51ee6183bcac70677462453d60ca00a3d2d 100644
--- a/experiments/selection_isar/BS1534-2a/config/BS1534-2a.yml
+++ b/experiments/selection_isar/BS1534-2a/config/BS1534-2a.yml
@@ -16,7 +16,7 @@ condition_in_output_filename: true
 ### Input configuration
 ################################################
 input:
-    fmt: "FOA"
+    fmt: "7_1_4"
     fs: 48000
     aligned_to:
         len: 20
@@ -47,7 +47,6 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
-            fmt: "MASA2DIR1"
         dec:
             fmt: "BINAURAL"
     c02:
@@ -55,7 +54,6 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
-            fmt: "MASA2DIR1"
         dec:
             fmt: "BINAURAL"
         out_fc: 7000
@@ -64,7 +62,6 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
-            fmt: "MASA2DIR1"
         dec:
             fmt: "BINAURAL"
         trans_bitrate: 256000
@@ -77,13 +74,13 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
-            fmt: "MASA2DIR1"
         dec:
             fmt: "BINAURAL_SPLIT_CODED"
         split_rend:
             fmt: "BINAURAL"
-            bitrate: 512000
+            bitrate: 768000
             dof: 3
+            hqmode: 1
 
 ################################################
 ### Post-processing
diff --git a/experiments/selection_isar/BS1534-3a/config/BS1534-3a.yml b/experiments/selection_isar/BS1534-3a/config/BS1534-3a.yml
index 4d9102f3b93eb6b8eed4984424a7be73da673f02..ff6aef9d723446a2b79e4b72a7a84fd0e929057b 100644
--- a/experiments/selection_isar/BS1534-3a/config/BS1534-3a.yml
+++ b/experiments/selection_isar/BS1534-3a/config/BS1534-3a.yml
@@ -16,7 +16,7 @@ condition_in_output_filename: true
 ### Input configuration
 ################################################
 input:
-    fmt: "7_1_4"
+    fmt: "ISM4"
     fs: 48000
     aligned_to:
         len: 20
@@ -78,8 +78,9 @@ conditions_to_generate:
             fmt: "BINAURAL_SPLIT_CODED"
         split_rend:
             fmt: "BINAURAL"
-            bitrate: 512000
+            bitrate: 768000
             dof: 3
+            hqmode: 1
 
 ################################################
 ### Post-processing
diff --git a/experiments/selection_isar/BS1534-4a/config/BS1534-4a.yml b/experiments/selection_isar/BS1534-4a/config/BS1534-4a.yml
index 1873defa5816fdeccc613d8d9367b74216b00753..fc40c0dd590bc8b3148cb878e3d279d0a8abf309 100644
--- a/experiments/selection_isar/BS1534-4a/config/BS1534-4a.yml
+++ b/experiments/selection_isar/BS1534-4a/config/BS1534-4a.yml
@@ -16,7 +16,7 @@ condition_in_output_filename: true
 ### Input configuration
 ################################################
 input:
-    fmt: "ISM4"
+    fmt: "HOA2"
     fs: 48000
     aligned_to:
         len: 20
@@ -47,6 +47,7 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
+            fmt: "MASA2DIR2"
         dec:
             fmt: "BINAURAL"
     c02:
@@ -54,6 +55,7 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
+            fmt: "MASA2DIR2"
         dec:
             fmt: "BINAURAL"
         out_fc: 7000
@@ -62,6 +64,7 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
+            fmt: "MASA2DIR2"
         dec:
             fmt: "BINAURAL"
         trans_bitrate: 256000
@@ -74,12 +77,14 @@ conditions_to_generate:
         bitrates:
             - 512000
         cod:
+            fmt: "MASA2DIR2"
         dec:
             fmt: "BINAURAL_SPLIT_CODED"
         split_rend:
             fmt: "BINAURAL"
-            bitrate: 512000
+            bitrate: 768000
             dof: 3
+            hqmode: 1
 
 ################################################
 ### Post-processing
diff --git a/ivas_processing_scripts/processing/config.py b/ivas_processing_scripts/processing/config.py
index 03d08932b9fc073f70fb4a6c165181f9d6777b99..fdcc787d960e795edd686db96d86422eb0de8b01 100755
--- a/ivas_processing_scripts/processing/config.py
+++ b/ivas_processing_scripts/processing/config.py
@@ -69,13 +69,18 @@ def merge_dicts(base: dict, other: dict) -> None:
 
 def get_default_config_for_codecs(codec_name: str, ext_with_dot: str = "") -> dict:
     is_transcoding = "transcoding" in codec_name
-    is_splitrend = "split_rend" in codec_name
+    is_splitrend = "ISAR" in codec_name
+
+    if is_splitrend:
+        post_rend_name = codec_name.split(" ")[1]
+        post_rend_bin = f"{post_rend_name}_post_rend{ext_with_dot}"
 
     codec_name = codec_name.split(" ")[0]
     cod_bin = f"{codec_name}_cod{ext_with_dot}"
     dec_bin = f"{codec_name}_dec{ext_with_dot}"
     rend_bin = f"{codec_name}_rend{ext_with_dot}"
 
+
     cfg = {
         "cod": {
             "bin": find_binary(cod_bin, raise_error=False),
@@ -93,7 +98,7 @@ def get_default_config_for_codecs(codec_name: str, ext_with_dot: str = "") -> di
         }
     if is_splitrend:
         cfg["split_rend"] = {
-            "bin": find_binary(rend_bin, raise_error=False),
+            "bin": find_binary(post_rend_bin, raise_error=False),
         }
     return cfg
 
@@ -273,7 +278,7 @@ class TestConfig:
                     )
             elif type.startswith("ivas_split_rend"):
                 merged_cfg = get_default_config_for_codecs(
-                    "IVAS split_rend", codec_bin_extension
+                    "IVAS ISAR", codec_bin_extension
                 )
                 merge_dicts(merged_cfg, cond_cfg)
                 cfg["conditions_to_generate"][cond_name] = merged_cfg
diff --git a/ivas_processing_scripts/processing/ivas.py b/ivas_processing_scripts/processing/ivas.py
index dcdbd3f377c821d17df6abc198ff44e05117677d..428017ebe7896a2dc228424c9b577bccc7ca984c 100755
--- a/ivas_processing_scripts/processing/ivas.py
+++ b/ivas_processing_scripts/processing/ivas.py
@@ -529,21 +529,36 @@ class IVAS_rend(Processing):
             elif self.out_fmt.name == "BINAURAL" and post_trj:
                 cmd.extend(["-T", str(post_trj)])
 
-        cmd.extend(
-            [
-                "-q",
-                "-fs",
-                str(self.in_fs // 1000),
-                "-i",
-                str(in_file),
-                "-if",
-                self.in_fmt.name,
-                "-o",
-                str(out_file),
-                "-of",
-                self.out_fmt.name,
-            ]
-        )
+        if self.in_fmt.name == "BINAURAL_SPLIT_CODED":
+            cmd.extend(
+                [
+                    "-q",
+                    "-fs",
+                    str(self.in_fs // 1000),
+                    "-i",
+                    str(in_file),
+                    "-if",
+                    self.in_fmt.name,
+                    "-o",
+                    str(out_file),
+                ]
+            )
+        else:
+            cmd.extend(
+                [
+                    "-q",
+                    "-fs",
+                    str(self.in_fs // 1000),
+                    "-i",
+                    str(in_file),
+                    "-if",
+                    self.in_fmt.name,
+                    "-o",
+                    str(out_file),
+                    "-of",
+                    self.out_fmt.name,
+                ]
+            )       
 
         if in_meta:
             cmd.append("-im")