diff --git a/lib/voicemeeter/vban.rb b/lib/voicemeeter/vban.rb
index 153ab87..51d7960 100644
--- a/lib/voicemeeter/vban.rb
+++ b/lib/voicemeeter/vban.rb
@@ -48,10 +48,8 @@ module Voicemeeter
 
       def initialize(remote)
         vban_in, vban_out = remote.kind.vban
-        @instream = []
-        vban_in.times { |i| @instream << VbanInstream.new(remote, i) }
-        @outstream = []
-        vban_out.times { |i| @outstream << VbanOutstream.new(remote, i) }
+        @instream = (0...vban_in).map { |i| VbanInstream.new(remote, i) }
+        @outstream = (0...vban_out).map { |i| VbanOutstream.new(remote, i) }
 
         @remote = remote
       end