A Real Transformation.
Putting a typical direct box on a high quality analyzer can reveal all manner of hidden issues – units sold as premium often exhibit audio behavior that is anything but, especially in the low frequency region or in measured total harmonic distortion.
If you disregard all of the technical mumbo jumbo it just boils down to this: the audio running through your direct box is often being treated poorly.
Our phantom-powered and transformer-isolated PCH X1 and X2 active direct interfaces are different.
Sonically Transparent.
Designed to be pristine-sounding before any other feature, these are units that you can trust implicitly to handle your audio, no matter what kind of signal it is.
Other direct boxes can distort low frequencies to the point where a low B on a bass guitar barely resembles the input, but the PCH X1 and X2 remain flat from far lower than that (10Hz) to well above what dogs can hear (80kHz) within a half of a dB, as well as remaining clean and quiet throughout that range.
Along with pristine audio, PCH X1 and X2 were designed with a host of real-world features that make them ideal as direct interfaces and line isolators.
Housed in a bulletproof 3mm extruded aluminum chassis for protection, it doesn’t matter if you’re using them on a loud stage or in a quiet world-class recording studio, X1 and X2 balance your audio perfectly – and they’re small enough to fit just about anywhere.
X2 is really two X1’s in the same enclosure, so their audio performance and behavior are largely identical. Each channel’s audio passes through a custom transformer, eliminating most ground loops and offering true galvanic isolation.
Each unit also features a ground lift switch per channel to combat hum, as well as a three position high pass filter that allows you to roll off low frequencies at two different points: 80Hz for taming rumble, and 240Hz for more dramatically carving out space in the mix for low frequencies on other instruments.
X2 features a phase reversal switch for reversing the polarity of the left XLR output, as well as a Sum switch that sums the inputs together and passes them to the left outputs (the right XLR output mutes to let you know Sum is engaged), allowing you to interface with both mono and stereo scenarios on the go without having to rewire anything.
Both the X1 and X2 feature a non-buffered Thru output in addition to the balanced XLR out, allowing you to feed the input signal to an additional device like an onstage monitor or instrument amplifier separately from the balanced output.
Videos
PCH X1 and X2 Videos
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Designed For Transparency
Custom audio transformer per channel.
Runs on phantom power (each channel requires power).
Ground Lift Switch per channel.
Three-position high pass filter on each input.
Defeatable Sum feature merges the Left and Right inputs and sends them to the Left outputs.
Extremely flat frequency response.
Extremely low total harmonic distortion (THD).
Thick 3mm extruded aluminum external shell with 5mm ribs for bulletproof protection.
Shell awning design protects switches while allowing easy access.
High quality long life jacks and switches.
In
- Input Impedance: 2 MΩ , (For PCH X2, when SUM enabled: 4 kΩ)
- Max Input Level: +20.5dBu
XLR Out
- Output Impedance: 100 Ω
- Gain Relative to Inputs: -20dB
- Maximum Output Level: +0.5dBu
- Noise Floor: -123 dBu (10-22kHz no A-Weight)
- Frequency Response:
- +/- 0.25dB, 20Hz – 30kHz (13.6KΩ load, HPF off)
- +/- 0.5dB, 10Hz – 80kHz (13.6KΩ load, HPF off)
- +/- 0.5dB, 20Hz – 20kHz (600Ω load, HPF off)
- Frequency Response (HPF 80Hz, 240Hz)
- Total Harmonic Distortion and Noise:
- 1kHz: 0.0007% (-10dBu out)
- 100Hz: 0.0035% (-10dBu out)
- 50Hz: 0.0125% (-10dBu out)
Thru
- Gain Relative to Inputs: +0dB, (For PCH X2, when SUM enabled: -6dB)
- Output Impedance: 0Ω, (For PCH X2, when SUM enabled: 1 kΩ)
Power Requirements: 5mA @ +48VDC (per channel)
PCH X1 Dimensions: L – 3.66″ (93mm) x W – 1.97″ (50mm) x H – 1.54″ (39mm)
PCH X2 Dimensions: L – 3.66″ (93mm) x W – 4.20″ (107mm) x H – 1.54″ (39mm)
Controls & Routing
Use the interactive dots (+) to learn more about PCH X1 and X2’s switches, inputs, and outputs.
IN (LEFT)
Unbalanced, high impedance, buffered inputs. Connect a guitar, bass, keyboard, amp+cab simulation pedal, or modeler. Use either input for a single mono source, or both inputs for a stereo source, or two independent mono sources.
IN (RIGHT)
Unbalanced, high impedance, buffered inputs. Connect a guitar, bass, keyboard, amp+cab simulation pedal, or modeler. Use either input for a single mono source, or both inputs for a stereo source, or two independent mono sources.
POWER LED (LEFT)
Lit brightly for each PCH X2 channel when powered on. Left and Right channels each require 48V phantom power for their use.
POWER LED (RIGHT)
Lit brightly for each PCH X2 channel when powered on. Left and Right channels each require 48V phantom power for their use.
THRU (LEFT)
Unbalanced, passive outputs. Pass your input to an amplifier (or two amps for stereo), effects, or other devices. See SUM/STEREO for signal routing options.
THRU (LEFT)
Unbalanced, passive outputs. Pass your input to an amplifier (or two amps for stereo), effects, or other devices. See SUM/STEREO for signal routing options.
SUM/STEREO
Configures the inputs as either summed or stereo.
sum: Merges Left and Right inputs. The summed signal is routed to the Left Thru and Left XLR output.
stereo: Discretely routes each Left & Right In to the respective Left & Right THRU and XLR outputs. Use the stereo setting for either one stereo source or two independent mono sources.
LIFT-GND (LEFT)
Set to lift (up position) the ground for either XLR Out if experiencing hum.
LIFT-GND (RIGHT)
Set to lift (up position) the ground for either XLR Out if experiencing hum.
RIGHT OUT
Balanced XLR, low impedance, active outputs. Connect to a mixing desk, preamp, or other low impedance gear for low noise/distortion routing of the source inputs. See SUM/STEREO for signal routing options.
LEFT OUT
Balanced XLR, low impedance, active outputs. Connect to a mixing desk, preamp, or other low impedance gear for low noise/distortion routing of the source inputs. See SUM/STEREO for signal routing options.
HIGH PASS FILTER (RIGHT)
Set the desired High Pass Filter option on each channel:
off (down position) — bypass the filter
240 (middle position) — reduces frequencies below 240Hz
80 (up position) — reduces frequencies below 80Hz
HIGH PASS FILTER (LEFT)
Set the desired High Pass Filter option on each channel:
off (down position) — bypass the filter
240 (middle position) — reduces frequencies below 240Hz
80 (up position) — reduces frequencies below 80Hz
PHASE
Set to ø (up position) if encountering phase issues with the left and right signals. This inverts the phase of the Left XLR output.
GROUND
Press to the “in” position to lift the ground if experiencing hum on the XLR Outs.
LEVEL
Press to the “in” position for mic level XLR output. Set to the “out” position for line level XLR output.
XLR LEFT / RIGHT OUTS
Balanced, low impedance outputs. Connect to a mixing console or other low impedance gear for low noise/distortion routing of your source input(s).
When connecting to the Left 1/4" In only, the mono input is routed to both XLR Outs.
When connecting a stereo source to both Left and Right 1/4" Ins, the stereo signal is routed to the Left and Right XLR Outs.
IN
Unbalanced, high impedance, buffered input 1/4". Connect a mono source: guitar, bass, keyboard, amp+cab simulation pedal, or modeler
THRU 1/4"
Unbalanced, passive 1/4" output. Pass your input source to an amplifier, effect, or other device.
POWER LED
Lit brightly when PCH X1 is powered on via phantom power.
LIFT/GND
Set to lift (up position) the ground if experiencing hum on the XLR Out.
XLR OUT
Balanced, low impedance, active output. Connect to a mixing desk, preamp, or other low impedance gear for low noise/distortion routing of the source input.
High Pass Filter
Set for the desired High Pass Filter option:
off (down position) — bypasses the filter.
40 (middle position) — reduces frequencies below 240Hz.
80 (up position) — reduces frequencies below 80Hz.







