Heritage Audio Grandchild 670 500 Series Tube Vari-Mu Compressor
Additional Photos:
Product Videos :
After having shocked and impressed the audio industry with the HERCHILD Model 670 & Model 660, Heritage Audio has now turned to the 500 series format to offer something extremely rare...An analog stereo Variable Mu tube compressor in a two-space 500 series module!
The GRANDCHILD 670/500 is stuffed with 4 6BA6 (5749) NOS tubes, three exclusively designed transformers (one per channel & and one for the Sidechain) and the necessary select components and circuitry to capture that elusive sound. For the first time ever it is possible to achieve that sought after tone and response in such an affordable package.
In common with its big brother, there is an INPUT GAIN control with an adjustable range of 20dB, the AC Threshold, 5 Attack and Release selectable times, the DC Threshold which gives access to the progressive ratio, which is a unique curve adjustment combining control of the ratio and knee, soft stepped from hard limiting to a very smooth and transparent, light compression. There is also a 3 position high-pass Sidechain filter to reduce the lower frequency's influence on the detection circuit, a must have nowadays for current productions.
As this is a stereo unit, a sum of the two channels will determine the overall dBs of gain reduction for both channels ensuring a stable stereo image. All built into a solid 2 space unit for the popular 500 series format with an attractive age-referencing front panel complete with a beautiful, informative VU meter that not only indicates Gain Reduction metering but also informs the user of the unit's 3-position Active/Bypass /Off switch confirming the status even from a distance.
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 670/500 does it perfectly. Having already designed the 19" rack Stereo/M&S/two channel version and the 19" rack Mono version, it was just a question of fitting that ever so familiar sound, into a smaller space. The engineers at Heritage Audio accepted the challenge and responded with determination to achieve that lush, classy, elegant tone. With four 6BA6 (5749) tubes and three transformers you can be sure that your signal will be treated like royalty and whatever you put through the GRANDCHILD 670/500 will come out sounding much better.
Specifications
- Input Impedance: 15 kΩ- Output Impedance: 50 Ω
- Output Level: +29 dBu
- Frequency Response: 20 Hz to 20 kHz + 0.5 dB
- Self Noise: Less than -78 dBu
- Harmonic Distortion: Less than 0.5 % at any level up to +24 dBu output (no compression)
- Dimensions (W x H x L): 180 mm x 133 mm x 75 mm
- Weight: 1.120 Kg
- Consumption: Slightly over 200mA per rail per slot (+16V/-16V)
Media
Q & A
Reviews
Protect your investment with the Long & McQuade Performance Warranty
A warranty can be a very important factor when making a buying decision. Because repairs can be very expensive in terms of parts and labour costs, manufacturers usually only provide one year limited warranties that generally only cover items that malfunction due to a manufacturer’s defect. With an important purchase such as a musical
instrument or piece of studio gear, however, many people want to have the peace of mind in knowing that their investment will be protected should the product no longer be performing at 100%.
Because of this, Long & McQuade provides our customers with a FREE one-year Performance Warranty on most of our products. The Long & McQuade Performance Warranty supplements the manufacturer’s warranty to ensure that our customers receive complete “no hassle” warranty coverage within their first year.
How does the Long & McQuade Performance Warranty differ from most manufacturers' warranties?
- Performance Guarantee: Normal wear and tear is covered, so your product will be performing as well as the day you purchased it for the entire duration of the coverage. Band and Orchestral Performance Warranty does not include replacing pads or cleaning for woodwind instruments, unless deemed necessary by our repair staff. Ultrasonic cleaning for brass instruments will be provided if deemed necessary by our repair staff, but is not routinely offered under the Performance Warranty.
- Product Replacement: If your product cannot be fixed or costs too much to fix, we will replace it with the equivalent model for no additional charge. If this is not possible, a full refund will be provided.
- No Lemon Policy: Your product will be replaced should the same problem occur multiple times.
- Convenient: Easy drop off and pick up of the product at any Long & McQuade location.
- Guitar Setup: Guitars purchased at Long & McQuade come with 1 free setup, to be redeemed within 1 year for new guitars and 90 days for used guitars.
- Loaners Available: A loaner product may be given while the product is being repaired.
- Power Surge Protection: Your product is covered even if damaged from a power surge.
- Accessory Coverage: Any peripheral devices or accessories that come with your product (i.e. foot pedal, case) are also covered.
- Commercial Use Coverage: Music and recording professionals who purchase gear for “heavy-use” commercial purposes will still be covered.
Long & McQuade reserves the right to restrict the purchase of additional years of Performance Warranty. Used products come with a 3-month Long & McQuade Performance Warranty. Some products (i.e. computers, software, cymbals and other items) are covered only by the manufacturer‘s warranty. Consumables (i.e. strings, reeds, drum sticks, batteries, tubes, cross faders) are excluded as they are designed to be replaced. Cosmetic Damage, Accidental Damage, or problems caused by Humidity or Temperature Issues are not covered. Speakers damaged by overpowering are generally not covered. Our coverage does not provide compensation for loss of use. As of June 2018 the Performance Warranty is no longer transferable. The warranty is only valid in Canada.
Purchasing additional years of coverage
Some manufacturers provide warranties for longer than 1 year; however, these are usually limited warranties that do not provide the same coverage as the Long & McQuade Performance Warranty. Customers interested in more complete and convenient (but not necessarily longer) coverage are still able to purchase additional years of the Performance Warranty.
If you are interested in receiving this coverage for longer than one year, you have the option of purchasing additional years of the Performance Warranty. The pricing is as follows:
- NEW products: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
- USED products: 4% of the current new selling price to increase the warranty from 3 months to 1 year. 4% for each additional year.
- GUITARS: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year. $45 maximum. An additional free setup is not included with additional purchased years of Performance Warranty.
- BAND and ORCHESTRAL instruments: 4% of the current new selling price to double the warranty from 1 year to 2 years. 4% for each additional year.
Great Additions
Reserve in Store
| Product | SKU | Qty |
|---|---|---|
| Grandchild 670 500 Series Tube Vari-Mu Compressor | 807272 |
