diff --git a/element_array_ephys/ephys_acute.py b/element_array_ephys/ephys_acute.py
index 50371104..f93a66a4 100644
--- a/element_array_ephys/ephys_acute.py
+++ b/element_array_ephys/ephys_acute.py
@@ -126,7 +126,7 @@ class AcquisitionSoftware(dj.Lookup):
         acq_software ( varchar(24) ): Acquisition software, e.g,. SpikeGLX, OpenEphys
     """
 
-    definition = """  # Software used for recording of neuropixels probes
+    definition = """  # Name of software used for recording of neuropixels probes - SpikeGLX or Open Ephys
     acq_software: varchar(24)
     """
     contents = zip(["SpikeGLX", "Open Ephys"])
@@ -533,7 +533,6 @@ def make(self, key):
                 - 1 : 0 : -self._skip_channel_counts
             ]
 
-            # (sample x channel)
             lfp = oe_probe.lfp_timeseries[:, lfp_channel_ind]
             lfp = (
                 lfp * np.array(oe_probe.lfp_meta["channels_gains"])[lfp_channel_ind]
diff --git a/element_array_ephys/ephys_no_curation.py b/element_array_ephys/ephys_no_curation.py
index 5a30d81d..8ba104ce 100644
--- a/element_array_ephys/ephys_no_curation.py
+++ b/element_array_ephys/ephys_no_curation.py
@@ -58,7 +58,6 @@ def activate(
     global _linking_module
     _linking_module = linking_module
 
-    # activate
     probe.activate(
         probe_schema_name, create_schema=create_schema, create_tables=create_tables
     )
diff --git a/element_array_ephys/readers/spikeglx.py b/element_array_ephys/readers/spikeglx.py
index ca60648d..214b70b9 100644
--- a/element_array_ephys/readers/spikeglx.py
+++ b/element_array_ephys/readers/spikeglx.py
@@ -96,15 +96,15 @@ def get_channel_bit_volts(self, band="ap"):
                 dataVolts = dataInt * Vmax / Imax / gain
         """
         vmax = float(self.apmeta.meta["imAiRangeMax"])
+        imax = self.apmeta.meta.get("imMaxInt")
+        imax = float(imax) if imax else IMAX[self.apmeta.probe_model]
 
         if band == "ap":
-            imax = IMAX[self.apmeta.probe_model]
             imroTbl_data = self.apmeta.imroTbl["data"]
             imroTbl_idx = 3
             chn_ind = self.apmeta.get_recording_channels_indices(exclude_sync=True)
 
         elif band == "lf":
-            imax = IMAX[self.lfmeta.probe_model]
             imroTbl_data = self.lfmeta.imroTbl["data"]
             imroTbl_idx = 4
             chn_ind = self.lfmeta.get_recording_channels_indices(exclude_sync=True)