null
Skip to main content

DS18

DS18 QHL4 4-Channel Line Output Converter with Auto Turn-On And Speaker Emulator

$140.99
$159.99
12% Off
SKU: QHL4
Condition: New
Availability: Usually Ships in 1-2 Days
Shipping: Calculated at Checkout
Adding to cart… The item has been added
Have more questions? Ask an Expert
Free shipping on orders over $200
30-Day Return Policy
Canadian Owned & Operated
Price Match Guarantee

Descriptions

About: DS18 QHL4 4-Channel Line Output Converter with Auto Turn-On And Speaker Emulator

Upgrade your vehicle's sound system with DS18’s QHL4. This compact converter is your key to unlocking superior audio quality and seamless integration. Engineered for those who demand nothing but the best, this 4-channel converter delivers pure, unfiltered sound with seamless integration into any vehicle system, whether OEM or aftermarket. Advanced transformers and cutting-edge noise rejection technology ensure that your audio remains untouched by interference.

Installation is a breeze thanks to its compact, rugged design, complete with a detachable harness and straightforward labeling. Versatility is at its core, effortlessly handling both high-power (up to 100W) and low-power sources, making it the perfect companion for any setup. With built-in speaker simulation, the QHL4 guarantees flawless integration by ensuring your OEM source detects the original speaker load.

The QHL4 doesn’t just stop at superior sound—it’s smart too. The intelligent +12V remote output automatically triggers your amplifiers, with LED indicators for easy monitoring. And with its durable aluminum housing and tear-proof wiring connector, you can trust it’s built to last.

Disclaimer: Ensure your vehicle's electrical system operates at 12V DC with a negative ground.

Product Highlights: 

  • Line Output Converter
  • 4 Channel
  • Lossless Audio ~ Double Step Down Ratio
  • Compact ~ Level Matching Controls(High/Low)
  • Selectable Auto Turn On ~ Remote Out
  • Noise Rejection ~ Speaker Emulator

Specifications: 

  • Maximum Speaker Level Input: 50W (Low Power) / 100W (High Power)
  • Maximum Preamp Output: 2.5V
  • Nominal Conversion Ratio: 4:1 (Low Power) / 6.5:1 (High Power)
  • Frequency Response: 15Hz-20KHz
  • Total Harmonic Distortion: 0.07% (1KHz)
  • Input Impedance: 6 ohms (Speaker Emulator)
  • Output Impedance: 600 ohms

Features: 

  • Speaker Level Input: Yes (4-Channel) 
  • Selectable Auto Turn-On: Yes, Audio (3v) / DC (2.5v)
  • Remote Output: Yes, 12v DC 100mA max
  • Amplifier Outputs: 4 Channels RCA (FL/FR/RL/RR)
  • Level Matching Controls: Yes, (Low Power / High Power)
  • Led Indicators: Yes, ON led indicator
  • Housing Material / Color: Aluminum / Black
  • Wiring Connector: Single Molex
  • Noise Rejection: Transformers with Galvanic Insulation
  • Step-Down Method: High Quality Lossless Transformers

Measurement: 

  • Overall Length: 3.9" (99 mm)
  • Overall Wide: 2.4" (61 mm)
  • Overall Height: 1.1" (28 mm)
  • Gross Single Unit Weight: 0.55 Oz (0.25kg)

Most products include a limited one year manufacturer’s warranty covering defects in materials and workmanship under normal use. Warranty coverage does not apply to improper installation, misuse, or damage caused by operation outside manufacturer specifications. For complete warranty terms, exclusions, and claim procedures, please visit our full Warranty Policy page.

Shipping Policy

Please allow 1-2 business days to process an order for in-stock items. Special order/non-stocking items will take longer to process and should be noted on the product page under availability. However, if there are any extended time frames, our team will notify you via phone or email to let you know about any delays or issues. Shipping times are only estimates and are not guaranteed.

We can ship to virtually any address in the world. However, there are some restrictions on select brands and products that cannot be shipped to international destinations. Free shipping is applicable within Canada on orders over $200 before taxes, excluding any heavy items with a fixed shipping fee. Singh Electronics has the right to charge or re-evaluate a shipping rate even after a purchase has been made. For U.S and international orders, a shipping fee will be applicable and calculated based on your location and the dimensions of the item(s). For international orders outside of North America, please email our team at contactus@singhelectronics.ca with the quantity, brand, model number, and your full shipping address including the zip code for a shipping estimate.

If a package is refused or marked undeliverable and returned back to the sender by the shipping carrier, the buyer will be responsible for the return shipping charges and any re-shipping charges. If a refund is approved, we will minus the full cost of the shipping. 

Return Policy 

We at Singh Electronics offer up to 30 days from the day of delivery or pickup for a return. To be eligible for a return, the item(s) must be in the original packaging, unused, and in the same condition that you received it. If you need to process a return, please submit a return request online or email our team at contactus@singhelectronics.ca. Please include your order number, the reason for the return, and any details about the product you would like to return. 

Our team will respond promptly with instructions on how to return the item(s) from your order and issue an RMA (Return Material Authorization) number. Once the RMA number has been issued you have up to 30 days to ensure the product is delivered to the provided return address. Upon receiving the item(s), please allow 7-14 business days for our team to process the return.  

Any returns/exchanges after 30 days of delivery will not be accepted. Returned product(s) without an approved RMA (Return Material Authorization) number will not be processed and/or refused. Return shipping and handling costs are the buyer's obligation unless a processing error has occurred. Legal action will be taken if the buyer refuses to take responsibility for these charges along with the cost of any legal expenses that occur.  

Product(s) that have been installed, used, or opened cannot be returned or exchanged unless approved by the seller. If approval is granted a restocking fee of up to 40% is applicable. 

Please note any special order item(s), which are specified on the product page under availability are subject to a 10% restocking fee on the exchange and a return will not be applicable unless approved by the seller. Any special orders where our team has reached out to confirm extended time frames that are agreed upon by the customer, can not be canceled. 

For any unidentified return or lack of response that is aged over 14 days, Singh Electronics will have the right to dispose of such items without notifying the buyer. No replacement will be issued on the unidentified return once it has been disposed of. For your in-store purchase(s) return policy, please refer to your receipt provided at time of sale.

Exempt products/brands

The following brands are exempt from any returns and are considered final sale items: 

Brands such as 18 Sound, 7Driver Audio, Alphasonik, American Bass, Autotek, Avatar, B2 Audio, Banda, Blastking, Cerwin Vega, Crescendo Audio, Crunch, CT Sounds, DD Audio, Deaf Bonce, DS18, Eros Alto-Falante, Expert Electronics, Fi Audio, Hifonics,  Incriminator, JY Power, Limitless Lithium, Odyssey, Orion, Pride Audio, PRV Audio, Resilient Sounds, Skar Audio, Sky High Car Audio, Soundstream, Stetsom, Sundown Audio, Taramp’s, Timpano, VFL Audio and XS Power are exempt from any returns

Special Return Periods

Purchases made between Nov. 1 and Dec. 31 are eligible for extended returns until Jan. 31 of the following year provided it is noted as a gift at the time of purchase.

Lost/Stolen/Damaged Products

Singh Electronics and the courier must be notified of any lost, stolen, or damaged product(s) within a 24-48 hour period after delivery. Singh Electronics will submit a claim with the courier to investigate, only when a decision has been reached by the courier can Singh Electronics move forward with a resolution. A shipping claim can take 30-90 days to be fully investigated, please be patient as we are not able to expedite this process. Furthermore, any claims or issues are the responsibility of the courier and will have to be brought up with them. By notifying us, we will attempt to resolve the issue on your behalf but it is not our responsibility once the product has departed our facilities. Insurance on orders is not included but can be purchased by emailing our team.  

More Recommendations

See all

Free Shipping

Lowest Price

Quick Service

Buy now pay later

#

Pay with the Sezzle Buy Now Pay Later App

Shop Sales
#

Join Our Dealer network & benefit from exclusives brands

Become a Dealer