diff --git a/src/devices/sound/dac.h b/src/devices/sound/dac.h
index 205a978e682..c29fb45eb6f 100644
--- a/src/devices/sound/dac.h
+++ b/src/devices/sound/dac.h
@@ -283,6 +283,7 @@ DAC_GENERATOR(MC3410, mc3410_device, dac_word_interface, dac_code_binary<10>, da
 DAC_GENERATOR(PCM54HP, pcm54hp_device, dac_word_interface, dac_code_binary<16>, dac_gain_r2r, "PCM54HP", "pcm54hp")
 DAC_GENERATOR(UDA1341TS, uda1341ts_device, dac_word_interface, dac_code_twos_complement<16>, dac_gain_r2r, "UDA1341TS", "uda1341ts") // I2C stereo audio codec
 DAC_GENERATOR(ZN425E, zn425e_device, dac_byte_interface, dac_code_binary<8>, dac_gain_r2r, "ZN425E", "zn425e")
+DAC_GENERATOR(ZN428E, zn428e_device, dac_byte_interface, dac_code_binary<8>, dac_gain_r2r, "ZN428E-8", "zn428e")
 DAC_GENERATOR(ZN429E, zn429e_device, dac_byte_interface, dac_code_binary<8>, dac_gain_r2r, "ZN429E-8", "zn429e")
 
 // DAC circuits/unidentified chips
diff --git a/src/mame/drivers/xtheball.cpp b/src/mame/drivers/xtheball.cpp
index 195df3f6e98..a793ab0f327 100644
--- a/src/mame/drivers/xtheball.cpp
+++ b/src/mame/drivers/xtheball.cpp
@@ -330,7 +330,7 @@ MACHINE_CONFIG_START(xtheball_state::xtheball)
 	/* sound hardware */
 	SPEAKER(config, "speaker").front_center();
 
-	MCFG_DEVICE_ADD("dac", DAC_8BIT_R2R, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5) // unknown DAC
+	MCFG_DEVICE_ADD("dac", ZN428E, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "speaker", 0.5)
 	MCFG_DEVICE_ADD("vref", VOLTAGE_REGULATOR, 0) MCFG_VOLTAGE_REGULATOR_OUTPUT(5.0)
 	MCFG_SOUND_ROUTE(0, "dac", 1.0, DAC_VREF_POS_INPUT) MCFG_SOUND_ROUTE(0, "dac", -1.0, DAC_VREF_NEG_INPUT)
 MACHINE_CONFIG_END