SKU: 45722518483

Heritage Audio GRANDCHILD 670 Tube Vari-Mu Stereo Compressor for 500 Series

Sale price$1664.55 Regular price$1849.50
Save 10%

Pay in installments of $462.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 12 - Aug 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Heritage Audio GRANDCHILD 670 Tube Vari-Mu Stereo Compressor for 500 SeriesGlue your mixes and busses together with the distinctive character of tube driven variable mu compression, using the GRANDCHILD 670 from Heritage Audio, a two space 500 series stereo compressor outfitted with four 6BA6 (5749) NOS tubes, three exclusively designed transformers (one per channel and and one for the sidechain), and the select components and circuitry necessary to capture that sought after warm, analog sound. The Fairchild for the Rest of

Glue your mixes and busses together with the distinctive character of tube-driven variable-mu compression, using the GRANDCHILD 670 from Heritage Audio, a two-space 500-series stereo compressor outfitted with four 6BA6 (5749) NOS tubes, three exclusively designed transformers (one per channel and and one for the sidechain), and the select components and circuitry necessary to capture that sought-after warm, analog sound.

The Fairchild for the Rest of Us
  • Based on the legendary Fairchild 670 compressor and Heritage Audio's HERCHILD 670 model, the GRANDCHILD 670 puts the proven performance of the HERCHILD Model 670 in a cost-effective, two-space 500 series module.
  • The module features an attractive front panel complete with a large, informative VU meter that not only provides Gain Reduction metering, but also shows the unit’s 3-position Active/Bypass/Off switch from a distance. 
  • In common with its big brother, there is an Input Gain control with an adjustable range of 20 dB, the AC Threshold, and 5 selectable Attack/Release times. In addition, the DC Threshold control provides a unique compression curve adjustment combining control of the ratio and knee, soft stepped from hard limiting to a very smooth and transparent, light compression.
  • Use the 3-position high-pass Sidechain filter to reduce the lower frequency´s influence on the detection circuit, a must-have feature for contemporary productions.
  • The stereo GRANDCHILD 670 uses the sum of the two channels to determine the overall amount of gain reduction for both channels, ensuring a stable stereo image.
That Elusive Variable-Mu Sound
  • Vacuum tubes in the gain-reduction circuit is at the heart of the specific tonality provided by variable-mu compression.
  • Four 6BA6 (5749) tubes and three transformers ensure classic, top-tier analog performance for your mixing and mastering sessions.
  • It's not easy to achieve that classic warm, hugging, intimate sound that just seems to effortlessly glue together a mix in a musical way, but the GRANDCHILD 670 delivers it, effectively providing that that lush, classy, and elegant tone.

Specifications

Input Impedance
15 Kilohms
Output Impedance
50 Ohms
Output Level
+29 dBu
Frequency Response
20 Hz to 20 kHz ±0.5 dB
Self Noise
< -78 dBu
Harmonic Distortion
< 0.5% at Any Level up to +24 dBu Output (No Compression)
Consumption
Slightly over 200 mA per Rail per Slot (+16 V / -16 V)
Dimensions
(W x H x L): 7.1 x 5.2 x 3" / 180 x 133 x 75 mm
Weight
2.6 lb / 1.12 kg
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 45722518483

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 26 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
L
Verified Purchase
Lisa Ryan
Fort Morgan, US
★★★★★ 5
Great product
Color: Black, Size: 4 Panel-88''
Literally exactly what I was needing
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 1, 2026
G
Verified Purchase
Grumpy
Whiting, US
★★★★★ 5
It's good...
Color: Black, Size: 4 Panel-88'', Color: Black, Size: 4 Panel-88''
It's good....took about 45 minutes to put together. No issues. Looks great...made the wife happy....
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
N
Verified Purchase
NettyB Variety Shoppe
Fort Morgan, US
★★★★★ 5
Durable non see through fabric
Color: Black, Size: 4 Panel-88'', Color: Black, Size: 4 Panel-88''
This room divider is exactly what I need. It is very durable and easy to move around. You can’t see through the fabric. I love it. My reason for purchasing this divider is to use as a divider and as a backdrop holder. And it serves both purposes perfectly. It looks much better in person than on camera. It did have the spots on one side on all of them but in a few days they went away. It foldaway and tucked away easily.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 14, 2025
B
Verified Purchase
Brittany
Houston, US
★★★★★ 4
Great product
Color: Black, Size: 4 Panel-88''
Love the look of this after it’s put together. It’s pretty sturdy and the connecting clips allow you to shape it different if you need it to fit in a corner. We use this at work so it’s great for the space we use it in. A little hard to store because it doesn’t fold up nicely because of the feet on it but I’m happy with it overall.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
L
Verified Purchase
Lori Z.
Lowell, US
★★★★★ 3
Does its job
Color: Black, Size: 4 Panel-88''
For the price the quality is decent. The only thing I do not love is the panels are attached to each other with 3 plastic clips. Only 1 side of the panel is actually attached to wheels. The other side kind of sits on the bar and is held in place with those clips.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026

recommand products