diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
index 3ba9a6cfc..7aa5bf7c9 100644
--- a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
@@ -496,7 +496,7 @@ class ZipformerEncoderLayer(nn.Module):
         self.balancer2 = Balancer(
             embed_dim, channel_dim=-1,
             min_positive=0.45, max_positive=0.55,
-            min_abs=0.1, max_abs=1.0,
+            min_abs=0.1, max_abs=4.0,
         )