Name: TOPPING Professional E4x4 Pre
Brand: TOPPING Professional
Price: 259 USD

Mid-Range

$259

TOPPING Professional E4x4 Pre is an audio interface with USB 2.0 connectivity. Inputs include 4 mic preamps, 4 combo inputs, and 2 Hi-Z inputs. Outputs include 2 main outputs, 2 line outputs, and 2 headphone outputs. It supports up to 192 kHz / 24-bit, 48V phantom power, loopback, and direct monitoring. Measured performance includes 115 dB dynamic range (input) and 115 dB dynamic range (output). Reference price: $259.

Audio interface specs: TOPPING Professional E4x4 Pre
Spec	TOPPING Professional E4x4 Pre
General
Category	Mid-Range
Reference Price (USD)	$259
Supported OS	Android/iOS/macOS/Windows
Connection	USB 2.0
Inputs
Mic Preamps	4
Combo Inputs (XLR/TRS)	4
Line Inputs	—
RCA Input	—
Hi-Z Inputs	2
ADAT Input (ch@48kHz)	—
Optical Ports (Input)	—
S/PDIF (Coax) Input	—
S/PDIF (Optical) Input	—
AES/EBU Input	—
Outputs
Analog Main Output	2
Analog Line Output	2
RCA Output	—
Headphone Output	2
ADAT Output (ch@48kHz)	—
Optical Ports (Output)	—
S/PDIF (Coax) Output	—
S/PDIF (Optical) Output	—
AES/EBU Output	—
Features
Phantom Power (48V)	Yes
MIDI I/O	—
Loopback	Yes
DSP Effects	—
Direct Monitoring	Yes
Audio Performance
Max Sample Rate (kHz)	192
Max Bit Depth (bit)	24
Preamp Gain Range (dB)	58
DR Input (dB, A-weighted)	115
DR Output (dB, A-weighted)	115
DR (Unknown Conditions)	—
THD+N Mic Input (dB(%), 1kHz)	-110.0dB (0.00032%)
THD+N Output (dB(%), 1kHz)	-100.0dB (0.00100%)
THD+N (dB(%), Unknown)	—
EIN (dBu, A-weighted)	-130.5
EIN (dBu, Unknown)	—
Measurement Reports	Frieve (external site)
Software & Other
Bundled Software	—
Notes	Hi-Z (instrument) input available on channels 1-2 only (shared with mic/line combo jack, switchable via INST button); +20dB additional digital gain via software; dual independent headphone gain (GAIN1/GAIN2)

TOPPING Professional E4x4 Pre Specs

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