diff --git a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
index aff5a7704..7c7b39fe9 100644
--- a/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
+++ b/egs/librispeech/ASR/pruned_transducer_stateless7/zipformer.py
@@ -1403,6 +1403,13 @@ class AttentionSqueeze(nn.Module):
                                           prob=_aux_grad_prob_out(),
                                           bias=False, initial_scale=0.05)
 
+        self.out_balancer = ActivationBalancer(
+            embed_dim, channel_dim=-1,
+            min_positive=0.3, max_positive=0.7,
+            min_abs=ScheduledFloat((0.0, 0.002), (8000.0, 0.02), (20000.0, 0.01)),
+        )
+
+
     def forward(self,
                 x: Tensor,
                 attn_weights: Tensor):
@@ -1438,6 +1445,7 @@ attn_weights: a Tensor of shape (num_heads, batch_size, seq_len, seq_len)
         x = x * scales
         x = self.activation(x)  # Identity only.  For diagnostics.
         x = self.out_proj(x)
+        x = self.out_balancer(x)
         return x
 
 
@@ -1532,7 +1540,7 @@ class NonlinAttentionModule(nn.Module):
 
         self.balancer2 = ActivationBalancer(
             channels, channel_dim=-1,
-            min_positive=0.4, max_positive=0.5,
+            min_positive=0.3, max_positive=0.7,
             min_abs=ScheduledFloat((0.0, 0.001), (8000.0, 0.01), (20000.0, 0.005)),
         )