Universal Audio UAD POWERED PLUG-INS ver.6.1 - Manual (Page 58)

UAD Powered Plug-Ins Manual - 58 - Chapter 5: Using Multiple UAD Devices
The UAD device power requirements are listed in Table 2 on page 58 . These
figures are measurements of the actual power draw for these devices when
running at full DSP load.
Note: UAD-2 Satellite cannot be powered by the Firewire bus; it requires the
included external power supply adapter for operation.
Important: If insufficient power is available to UAD devices, unpredictable
behavior may result.
Windows The PCI specification provides for up to 25W per device, however some host
systems don't provide (or require) this much power. When designing a com-
puter DAW system, a common rule of thumb is to provide an extra
50%–100% of headroom over the estimated maximum total power draw of
all components in the system. Don’t skimp on the power supply unit! When
building a custom system a quality sufficiently-rated PSU is critical for system
stability.
IRQ Conflicts Under rare conditions running multiple UAD cards may cause an IRQ conflict
which can cause system instability or freezes. If this occurs, try moving the
UAD card(s) to different slots and/or contacting UA for technical assistance.
Multidevice DSP Loading
DSP loading in a multidevice system behaves the same as in a single UAD-2
Duo or Quad system (these devices have multiple DSPs), and is managed au-
tomatically by the UAD software. See
“DSP Loading Information” on page 93
for details.
Table 2. UAD Power Requirements by Device Type
UAD Device Type Maximum Power Draw
UAD-1 15 Watts
UAD-1e 9 Watts
UAD-2 Solo 5 Watts
UAD-2 Duo 7 Watts
UAD-2 Quad 10 Watts
UAD-2 SOLO/Laptop 3.5 Watts
UAD-2 Satellite (Duo)* 4 Watts (*via external power supply)
UAD-2 Satellite (Quad)* 7 Watts (*via external power supply)