Detail 01
5751 and 6414 tubes
Tubes age and eventually need replacing. Give it warm-up time before critical takes; it won't sound settled cold.
Product detailSKU #1274319727494
ManleyVOXBOX Combo Voice Processor
1/2
Independent shopping perspective
The Korena take
A 3U tube channel strip combining preamp, compression, EQ and de-essing. For studios tracking vocals through one high-end front end.
Strong match
Who this is for
- Tracking lead vocals through a single tube chain to disk
- Studios wanting compression committed on the way in
- Rooms replacing several separate outboard boxes with one path
Consider the trade-offs
When to look elsewhere
- Anyone needing multiple channels for drums or band tracking
- Plugin-first setups mixing entirely in the box
- Racks with fewer than three free spaces
What matters in use
The specifications, translated
Catalog numbers tell only part of the story. These are the details most likely to change how this product feels, sounds, or fits into a setup.
Detail 02
10:1 ratio, 32dB maximum reduction
That's limiting territory, not gentle leveling. It's built to catch peaks hard rather than shape a slow ride.
Detail 03
2ms attack, 0.5 second release
2ms lets consonants and pick attack through before clamping. The slow release keeps it from pumping on sustained vocals.
Detail 04
De-esser notches at 3, 6, 9, 12kHz
Fixed frequency choices, not a sweep. You pick the closest one to the singer's sibilance instead of dialing it exactly.
Detail 05
+31dBu maximum output, 116dB signal-to-noise
Enormous headroom. You can drive it hard for tube character without running into the output stage.
Detail 06
0.3% THD+N at 20dBu
Measurably colored rather than transparent. That distortion is the point, but it's not a clean measurement box.
Detail 07
3U, 19 x 5.25 x 10 inches, 21 lb
Three rack spaces, ten inches deep, and heavy enough to need rear rack support in a road case.
Final check
Know before you order
- 01Confirm mains voltage for your region before ordering. It runs 50 to 60Hz.
- 02Three rack units plus breathing room. Tube gear runs warm in a sealed rack.
- 03Budget for replacement 5751 and 6414 tubes down the line.
Product questions
Before you decide
Straight answers to the questions shoppers most often ask about this product.
01Can I use it on things other than vocals?
Yes. Bass DI, acoustic guitar and room mics all pass through the same preamp, compressor and EQ. The de-esser notches are aimed at vocal sibilance.
02Is the compressor gentle enough for mix bus use?
The 10:1 ratio is aggressive for bus duty. It's built to limit a source hard on the way in, not to glue a mix subtly.
03How much rack space and weight should I plan for?
Three rack units, 19 by 5.25 by 10 inches, and 21 pounds. Support it at the rear if it's going in a travel rack.
04Does it need warm-up time?
Tube gear does. Power it up well before a session so the 5751 and 6414 stages settle before you commit takes.
Reference
Full specifications
The complete catalog record, organized around the decisions musicians make when comparing gear.
1 detailsSound
- Frequency Response
- 10Hz - 100KHz
3 detailsConnections & power
- Power Consumption
- 24W
- Mains Voltage Frequency
- 50 œ 60Hz
- Maximum Output
- +31dBu
4 detailsSize & weight
- Noise Floor A Weight
- -86dB
- Weight
- 21
- Shipping Weight
- 21lb.
- Dimensions
- 19 inch x 5.25 inch x 10 inch (occupies 3U)
9 detailsOther
- Tube Complement
- 5751 and 6414
- Maximum Reduction
- 32dB
- Thd N 1khz 20dbu
- 0.3%
- Signal to Noise Ratio
- 116dB
- Attack Times
- 2mS
- Gain
- unity
- Release Times
- .5 Sec
- De Ess Notch Frequencies
- 3, 6, 9, 12KHz, none (LIMIT)
- Ratio
- 10:1
