diff --git a/gnpy/core/network.py b/gnpy/core/network.py
index e8ff99592..6e7a59737 100644
--- a/gnpy/core/network.py
+++ b/gnpy/core/network.py
@@ -32,7 +32,7 @@ def edfa_nf(gain_target, variety_type, equipment):
     return amp._calc_nf(True)
 
 
-def select_edfa(raman_allowed, gain_target, power_target, equipment, uid, restrictions=None):
+def select_edfa(raman_allowed, gain_target, power_target, equipment, uid, restrictions=None, verbose=True):
     """amplifer selection algorithm
     @Orange Jean-Luc Augé
     """
@@ -90,10 +90,11 @@ def select_edfa(raman_allowed, gain_target, power_target, equipment, uid, restri
                     please increase span fiber padding')
         else:
             # TODO: convert to logging
-            print(
-                f'{ansi_escapes.red}WARNING:{ansi_escapes.reset} target gain in node {uid} is below all available amplifiers min gain: \
-                  amplifier input padding will be assumed, consider increase span fiber padding instead'
-            )
+            if verbose:
+                print(
+                    f'{ansi_escapes.red}WARNING:{ansi_escapes.reset} target gain in node {uid} is below all available amplifiers min gain: \
+                      amplifier input padding will be assumed, consider increase span fiber padding instead'
+                )
             acceptable_gain_min_list = edfa_list
 
     # filter on gain+power limitation:
@@ -114,7 +115,7 @@ def select_edfa(raman_allowed, gain_target, power_target, equipment, uid, restri
     selected_edfa = min(acceptable_power_list, key=attrgetter('nf'))  # filter on NF
     # check what are the gain and power limitations of this amp
     power_reduction = min(selected_edfa.power, 0)
-    if power_reduction < -0.5:
+    if power_reduction < -0.5 and verbose:
         print(f'{ansi_escapes.red}WARNING:{ansi_escapes.reset} target gain and power in node {uid}\n'
               + '     is beyond all available amplifiers capabilities and/or extended_gain_range:\n'
               + f'    a power reduction of {round(power_reduction, 2)} is applied\n')
@@ -218,7 +219,7 @@ def set_amplifier_voa(amp, power_target, power_mode):
         amp.out_voa = voa
 
 
-def set_egress_amplifier(network, this_node, equipment, pref_ch_db, pref_total_db):
+def set_egress_amplifier(network, this_node, equipment, pref_ch_db, pref_total_db, verbose):
     """this node can be a transceiver or a ROADM (same function called in both cases)"""
     power_mode = equipment['Span']['default'].power_mode
     ref_carrier = ReferenceCarrier(baud_rate=equipment['SI']['default'].baud_rate,
@@ -278,7 +279,7 @@ def set_egress_amplifier(network, this_node, equipment, pref_ch_db, pref_total_d
                         restrictions = next_node.restrictions['preamp_variety_list']
                     else:
                         restrictions = None
-                    edfa_variety, power_reduction = select_edfa(raman_allowed, gain_target, power_target, equipment, node.uid, restrictions)
+                    edfa_variety, power_reduction = select_edfa(raman_allowed, gain_target, power_target, equipment, node.uid, restrictions, verbose)
                     extra_params = equipment['Edfa'][edfa_variety]
                     node.params.update_params(extra_params.__dict__)
                     dp += power_reduction
@@ -303,7 +304,7 @@ def set_egress_amplifier(network, this_node, equipment, pref_ch_db, pref_total_d
                     # if variety is imposed by user, and if the gain_target (computed or imposed) is also above
                     # variety max gain + extended range, then warn that gain > max_gain + extended range
                     if gain_target - equipment['Edfa'][node.params.type_variety].gain_flatmax - \
-                            equipment['Span']['default'].target_extended_gain > 1e-2:
+                            equipment['Span']['default'].target_extended_gain > 1e-2 and verbose:
                         # 1e-2 to allow a small margin according to round2float min step
                         print(f'{ansi_escapes.red}WARNING{ansi_escapes.reset}: '
                               f'WARNING: effective gain in Node {node.uid} is above user '
@@ -652,7 +653,7 @@ def add_missing_fiber_attributes(network, equipment):
     add_fiber_padding(network, fibers, default_span_data.padding)
 
 
-def build_network(network, equipment, pref_ch_db, pref_total_db, set_connector_losses=True):
+def build_network(network, equipment, pref_ch_db, pref_total_db, set_connector_losses=True, verbose=True):
     """Set roadm equalization target and amplifier gain and power
     """
     roadms = [r for r in network.nodes() if isinstance(r, elements.Roadm)]
@@ -665,7 +666,7 @@ def build_network(network, equipment, pref_ch_db, pref_total_db, set_connector_l
         set_roadm_per_degree_targets(roadm, network)
     # then set amplifiers gain, delta_p and out_voa on each OMS
     for roadm in roadms + transceivers:
-        set_egress_amplifier(network, roadm, equipment, pref_ch_db, pref_total_db)
+        set_egress_amplifier(network, roadm, equipment, pref_ch_db, pref_total_db, verbose)
     for roadm in roadms:
         set_roadm_input_powers(network, roadm, equipment, pref_ch_db)
     for fiber in [f for f in network.nodes() if isinstance(f, (elements.Fiber, elements.RamanFiber))]: