The David Clark H6740-34 Radio Direct Intrinsically Safe Headset provides clear communications and hearing protection for high-noise environments. This headset connects directly to portable radios with no adapter required.
The David Clark H6740-34 Headset is also Intrinsically Safe (IS) and carry FM Approval for those areas that require Intrinsic Safety ratings, while providing the same rugged durability and comfort afforded by all David Clark Company headsets. Ideal for oil rigs and gas refineries, chemical and paper plants―virtually any potentially explosive industrial or manufacturing environment.
H6700 Series Headsets carry worldwide FM Approval for those areas that require Intrinsic Safety ratings, while providing the same rugged durability you’ve come to rely on from David Clark Company.
Connect directly to portable radio with no adapter required
Rated Intrinsically Safe with FM Approval (Approved to IS / CSA / ATEX / IECex standards)
Radio specific connector
David Clark rugged durability and reliability
Marine-grade, stainless steel hardware and rugged construction
Marv has had a 30-Day Return Policy for over 30 years!
If you’re not satisfied, we’ll refund your money!
Our Customers Say it Best
"This was my first purchase from Marv Golden, but it certainly won't be my last! With their great selection, exceptional customer service, and superb pricing, you really can't go wrong. - Charlie (Cessna 172)"
"Rick spent more time with me than I expected in order to help me select the correct iPad yoke mount for my Aerostar. He even stayed on the phone while I took some measurements in my plane! Above and beyond – will call again in a heartbeat. - Jack (Piper Aerostar, Instrument Pilot)"
"As always, the quality is outstanding, and it was delivered promptly. These are great people and they're always there to help! - JR (Private Pilot)"
"My order shipped very quickly. I highly recommend buying any product from this website. - Dave (CFII)"
"Great prices and great Customer Service at Marv Golden.com! - DJ (Hawker 800)"
"Marv has the best prices and service! - John K (Piper Arrow)"
"Marv Golden Pilot Supplies go above and beyond. I received a brand new release watch at a great price and it was safely delivered half way around the world to country NSW. My first international transaction over the net and was a wee bit anxious but fully satisfied with these guys. 10 stars! - Wiggy (Paramedic Flight Crew)"
"Service, Selection, and Prices were were excellent! Marv's is my new Aviation Store! - Susie (A320)"
Excellent responsiveness, quick shipping, and no problem with return and refund.
- Big head johnny
Super efficient delivery. Less than 20 hours order to delivery - West coast to East coast!
- Captain cookie
Marv knew just what I wanted! Thank you for your excellent customer service!
Fast shipping and Marv's sales team was excellent at customer communication!
Price is right - delivered on time. Good customer service.
Excellent value! Great customer service! Thank you for the years of great business!
- Yudi kristian
Best prices I could find anywhere!
Great website! Prices and quality of items can't be beat!
- Old guy
Products were as advertised - great sales staff!
Marv's is the best pilot shop in San Diego! Very pleased with the service and staff!
Fast delivery and great communication. Will continue to order from Marv until I retire!
Always happy with my orders from Marv Golden!
I'm absolutely thrilled with MG! Immediate shipping!
Will be a return customer - Thank you Marv Golden!
If MG doesn't have it, you don't need it! Great selection of products and the staff is super helpful.
Fast shipping and good service!
Products were exactly as advertised. Ordering was easy!
Perfect service and quick delivery. I will definitely be back to MG!
Great service and fast delivery!
Easy ordering, good prices, fast shipping. MG is bookmarked in my browser.
Excellent Service! I expected that it would take a week and I got it right away!
Very happy with the service. I have bought a lots of items from Marv over the years!
Shopping here was quick and easy! Customer service is awesome!
Great service and great prices!!
- Wm. hayes
Professional staff is very knowledgeable!
MG has the best prices!
Shopping at Marv's was quick and painless!
Delivered quickly and efficiently. I would recommend MG for all your aviation needs!
MG is the best! Great support over the phone and very friendly staff!
- Mike chev
Great customer service and fast shipping! Would recommend the website to others.
Thanks to the sales team at MG!
Good company and fast shipping!
Delivered faster than promised! Better prices than anywhere else!
Great customer service experience, great prices!
Excellent customer service! The staff really went above and beyond!
Top quality products at low prices! Thank you Marv Golden!!
Customer service at MG was excellent with fast shipping. I would buy from them again!
Good store/website. Competitive prices.
Great shopping experience!
Easy purchasing and fast shipping!
Marv has never let me down in 30 years of buying from them!
Marv's sales staff is impeccable! Shipping was fast and had great rates!
Order was shipped immediately - would highly recommend them for all aviation needs.
MG is awesome! Great quality products!
I've always bought sunglasses from MG. Always a pleasure to do business with them.
Great service! Fast delivery!
Marv's is fast and the shipping is trustworthy!
MG was great - went above and beyond to help. Without a doubt will continue to purchase with them.
Fast and reliable shipping!
Would recommend to others! Arrived on time and as described.
Great products and easy ordering and shipping!
- Capt kim
Fast delivery with a great support team!
Prompt shipping. Marv's will be our initial choice for future needs!
I enjoyed my shopping experience! Very prompt ordering and delivery!
Fast shipping and easy returns!
- Joe anderson
I've been a customer of MG since 2004! Great place to get all your pilot supplies!
Great experience at MG as always!
Great quality and fast shipping. Amazing service - highly recommended.
Best prices! Respectful and patient customer service staff!
Customer service is the best!! I love it.
Great customer service! Questions were answered quickly and accurately!
Very good service. Fast shipping. Easy returns. They answer the phone!
Easy-to- navigate website! Items were in stock and shipped really fast!
High quality items at great prices! Thanks MG!
Marv Golden had a good price and delivery was faster than expected.
Never any problems at MG! Orders are on time and great quality!
Love the quality of the items I bought from Marv's!
Great service and quality. Thank you Marv!!
- Bomber jacket
Outstanding buying experience!
Painless ordering and fast shipping!
Awesome service at MG! Very happy with my products!
Everything was great! Customer support was helpful! I would order again with confidence!
Easy ordering with great communication from the sales team! I would shop here again!
Perfect online experience, Will definitely be using Marv again!!
Great shopping experience! Great customer service - They are my new go-to!
Bought from Marv Golden. 5 Star customer service as usual. Thanks MG
Always great prices and the customer service staff has a great attitude!
MG staff was very professional! I would definitely do business with them again!
Excellent value and outstanding quality. And all for a low price!
Marv has the best prices - the items were delivered on time as promised!
I’ve been buying from MG for years. Great customer service and very responsive!
- Dave r.
Always a great experience at MG!
High quality products delivered quickly! Exceeded my expectations in quality and service!
MG is a great value!
Great online shop
Great sales experience and customer service!
Easy purchasing with fast delivery!
Fast shipping! Will definitely buy from MG again.
Everything arrived perfect and on time. Thanks!
This was my first purchase from MG but it won't be the last!
Easy ordering and professional staff!
Excellent! 5 Stars for MG!
MG has the best prices and the best service!
Marv Golden is the only place I buy from! They have super fast delivery!
I had seen this at the FBO, but only MG had them online!
Complaining about shipping taking too long and I got a standard email saying sorry. That is not customer service they did not fix the problem or help the matter by doing something to maintain my business
Great customer service and speedy delivery! 5 Stars!!
MG shipped it quickly after two other suppliers had them on back order.
Simple ordering! Respectful and friendly customer service staff!
Staff is friendly and knowledgeable! Product arrived on time! I will definitely be back!
Will definitely buy from MG again!
Easy ordering and fast shipping! Great prices.
Great selection of products with fast delivery!
The shipping was amazingly fast! Perfectly easy online ordering, I strongly recommend MG!
I will always shop at Marv Golden. Best customer service I've seen in our industry.
I was impressed with MG for my first order, I'll definitely be back!
Awesome service at Marv's as always!
Customer service from MG is beyond compare! I wish they would run my car dealership!
Great turnaround time - received my products earlier than expected!
- Nom de plume
Great service from MG!
I'm a returning customer and I've never had any problem at Marv's!
Great and reliable service! Thanks Marv!!
Best pilot shop on the market! Fast, efficient service and always the best prices!
My items arrived ahead of my delivery date! I was very pleased with the service at MG!
Thanks for the great value!
- Weekend warrior
Great customer service team and quick delivery! Thanks MG!
Outstanding products and customer service! I will definitely be back!
Great customer service staff! Five stars!
- Mark h
MG did a wonderful job with my order and shipped it to me so quickly!
Marv Golden always has great prices and customer service!
Marv is my go-to for pilot supplies! Always has the best prices!
The best service around!
Order was delivered quickly for a great price! Thanks MG!
Five stars, item very well packed and super fast shipping to France.
- Ze grüll
Good prices, fast shipping, great service. Can't wait to come back again!
MG is always reliable and responsive! I always shop here first!
Very satisfied with my purchase! Fast shipping!
I have used MG for years and I have always been pleased with my orders!
Will definitely shop MG for my aviation needs.
- Bear in the air
Great service, received ahead of time. My go-to place for pilot supplies.
Fast shipping, good web site to use, fun tracking map. Would buy from MG again.
Marv Golden provided easy, seamless service. They included a Free Gift which was great! Thank you!
Outstanding service from the MG sales team!
Have been dealing with them more than 5yrs now. Cheaper than most and very well stocked. I recommend them!
I always use Marv Golden! I never have any difficulty with their products!
Marv's had superior service and really paid attention to every detail!
From website to delivery, the process was professional and pleasant!
MG got these headphones out to me super quick. Would definitely buy from MG again !
I was very pleased with my first order from MG! I will definitely be back!
Without a doubt the best experience! 5 Stars! I'll be back for more!
Best part is the sales team, including a former Navy airman and an Air Force veteran. Five stars for Marv Golden!
- Old doc
Awesome products and great service!
I would recommend Marv to all pilots! Fast shipping and delivery!
Product exactly as described. Fast shipping. Thank you :)
I've been shopping at MG since 1992 and the service is always exceptional!
Great products! Always a pleasure to shop at Marv Golden!
Great service after the sale. The best!
By far the best customer service. Questions were handled quickly and efficiently!
5 Star service from MG! Fast shipping with great prices!
Fast shipping and great customer service! Best sales team!
Shopping at MG was so easy! My items were exactly as advertised!
Fast delivery and reasonable prices! I recommend them for all pilot supplies.
The experience was great! Very helpful customer service!
Easy and convenient shopping! Will definitely be back again!
Great experience shopping at Marv Golden!
No problems with ordering, fast delivery!
I've been a happy customer of Marv's for a long time!
Outstanding quality and customer service! Flawless ordering and shipping!
Great all around experience at MG!
Simple and quick shipping! Customer service was very helpful and friendly!
MG is a great company! Sales representative was so helpful!
Fast and simple ordering! Great customer service!
Service was excellent as promised!
Shopping was very quick and easy. Good shipping timeline. Good Price.
Marv Golden always takes excellent care of me and my students!
The staff was very friendly and helpful! Thanks MG!
Great sales staff! Would recommend to anyone!
Excellent service from MG! Highly recommend them!
Had an excellent shopping experience at MG. Customer service is awesome!
Exceptional! fast shipping, good pricing and excellent customer service!
Great customer service from MG with fast shipping!
Excellent service as usual. Very happy.
Great customer service - way to go Marv!
Great price on this item. Shipped fast!
Great quality products!
The staff was very helpful and efficient!
Marv knew just what I needed! Thank you for the great customer service!
- Mike baker
Straight-forward website with easy ordering! Fast delivery.
Same day service and consistent quality. Highly recommend MG!
Great customer service. Arrived quickly after ordering.
Excellent turnaround time on order! Thanks MG!
Great selection and fast delivery!
Fabulous service and excellent support before and after purchase.
- All wx / 24-7-365 / u r sick = ifly reserve pro
Fast delivery and shopping was quick and easy!
Best prices I could find anywhere! Shipping was so fast!
Very happy with my purchase! Easy ordering online!
I highly recommend MG!
Great products delivered promptly! Very happy with MG!
First time shopper but will definitely be back again!
Quick delivery with quality products!
Excellent customer service and good prices!!
Marv's had the best price and the fastest shipping!
Good experience at MG!
Order shipped promptly! Thanks MG!
Thanks to the great staff for helping me solve my problem!
Friendly customer service staff!
Like a local Pilot Shop - only better! Will always come back to MG!
- Texas johnny
MG is the best! Will continue to order from them over and over again!
Cheapest prices with fast service!
Fast shipping, best prices, excellent customer service! MG has a knowledgeable staff!
Very accommodating sales team!
- Yellowcopter john
Marv Golden has prompt and courteous customer service staff!
Customer service responded promptly. Simple process and fast delivery!
Fast shipping and excellent service by Marv Golden!
MG has the best prices around and a knowledgeable sales staff! Quality customer service!
MG always has exactly what I need and always at a great price!
Left an outstanding first impression! Kept me updated through every step of the process.
Great store with fast shipping!
Great prices and fast shipping!
- Whiskey bravo
Thank you MG!
I'm a very satisfied customer of Marv's! I will definitely be back!
Always enjoy fast shipping and good prices!
Awesome products and great service!
I love MG! Huge selection, excellent prices, and fast shipping! My first choice!
As always, Marv's customer service was great!
- Fabian masini
Excellent customer service and price. Quality products and fast shipping from MG!
The support I received from MG was superb!
Well-built products at a great price!
Best online pilot store! Been a faithful customer for 25 years, best price, best service!
Staff is very knowledgeable! MG is at the top of my list!
Great items and great prices from MG!
First class experience! Products were delivered on time as expected!
The MG sales team went above and beyond to make sure my items arrived in time!
Great website with huge selection! Great prices and fast shipping!
Exceeded my expectations. Delivered before their promised delivery date. Would definitely order again!
Great products at great prices! Shipping was very quick.
Shopping at MG was so easy! Very helpful customer service staff!
Easy to order, and delivered quickly!
Staff has always been helpful and ships my orders out fast!
Excellent customer support, very fast shipping, lowest price I could find on the internet even after including shipping.
Very pleased with my purchase at Marv Golden!
Very happy with the quality! I will use Marv Golden again and again!
No problems with MG!
Found exactly what I need from MG!
MG ships so fast and has the best prices and selection!
MG is my new favorite online store! Great international delivery!
Items arrived on expected delivery date and ordering was so easy!
Quality customer service! Highly recommend MG for pilot supplies!
The service at MG is always great!
Excellent customer service! Very satisfied with my purchase!
Order was delivered promptly! Thanks MG!
Great prices and fast shipping
Customer service was quick to respond and fast to deliver! Highly recommended!
Great products at great prices! Easy shopping and speedy delivery!
Marv Golden was great! They always kept me informed about the status of my order!
Always a great experience at MG!
I appreciate the flexibility of the MG staff when I needed help! A+
Excellent customer service at MG!
Great products and great customer service from MG!
Very simple order process! Fast shipping! Great customer service!
Won't buy from anyone other than Marv!
Easy order process and speedy delivery!
Marv Golden had the best price, order was easy to place, and item was shipped fast!
MG had the best prices and the items were actually in stock!
MG is dependable with fast delivery!
Excellent quality that gets the job done! You are the best Marv!.
I would definitely recommend MG to anyone for aviation equipment!
Excellent customer service and the shipping was lightning fast!
MG has never let me down - product is always as described. Thanks Marv for the years of great service!
MG prices are hard to beat!
Very convenient shopping and the website was easy to navigate!
High quality products with fast shipping!
Great customer service! Fast and reliable delivery! I am very satisfied with my purchase!
I was so happy with my purchase from MG!
Easy online ordering and fast shipping!
Quick delivery and great quality!
Best prices and fast service.
Fast shipping with great prices!
- Airbus pilot
Very easy ordering! Received my products super fast!
- Golden girl
Only one word: Super!
MG customer service was great!
Great shopping experience at MarvGolden.com!
- Mike chev
Top quality materials and fast shipping!
MG shipped it out right away. Thanks for the great customer service.
Shopping was very quick and easy at Marv Golden!
Great products and customer service!
The great product came faster than expected and was a perfect fit!
- Doc willis
Great quality and great service every time!
Delivered as promised! Great!
Simple ordering, great service, easy to navigate website! Will come back again!
Fast international delivery! Won't be the last time I buy from MG!
- Hans olesen
Shipping was fast, the sales team was excellent! Wonderful overall experience!
Great selection of quality products! Fast shipping and tracking!
Great customer service! Great warranty with reasonable prices!
- Watch collector
Very easy ordering process!
Thanks, MarvGolden! Good service and fast shipping.
- C. jackson
Easy ordering and fast shipping! Thanks so much!
Great service and quickly shipped.
Fast delivery. Have been using MG for years and never been disappointed!
Will buy again from MG!
Fast shipping! Great descriptions of products. Helpful staff!
Marv, thank you for saving me money!
Shopping at Marv Golden is fantastic! Fast delivery and customer care is always superior!
MG had the best value!
- Spike of glastonbury
Quick and reliable customer service!
Thank you for your superior customer service!
Item was shipped fast and secure!
I've been a customer for 15 years! Outstanding service and great prices!
Prompt and accurate shipping!
Katie was really helpful with shipping!
MG comes highly recommended by manufacturers everwhere! It is an excellent place to shop!
MG has been my go-to pilot store for 20+ years! Great customer service and fast shipping!
First place I go for aviation things!
Orders are sent with lightning speed; tracking the order is spectacular with the links sent to your email; prices are outstanding!
Great website-so easy to navigate!
Marv Golden has always been great to deal with, no matter what.
High quality items at great prices!
Excellent product descriptions and my items were delivered quickly and were great quality!
High quality and fast delivery!
Incredibly helpful staff! Products came ahead of schedule! Highly recommended!
Excellent service with quick turnaround on orders!
Great quality products and good shipping options!
Excellent customer service!
Great customer service!
Great prices and excellent customer service!
Competitive pricing and fast delivery!
Thank you for the fast shipping - only 4 days from order to delivery (including weekends) to AK!
Product was shipped as promised. Good company!
Fast shipping, easy ordering, and great prices!
Easy ordering and straightforward customer service!
MG is second to none! Great products and customer service!
The customer support at MG was outstanding!
MG is fantastic!
Marv Golden is the best. Wonderful service bar none.
MG is great and has awesome customer service.
Always good, speedy service.
Quick, easy, and fast shipping!
Customer service was so helpful!
Product arrived ahead of schedule. MG did a great job! Recommend to all!
Good quality products and fast shipping! Easy to navigate the website!
Quick delivery and great experience shopping here! Thanks MG!
Great prices and website!
- Capt roger
Affordable product that was shipped in a timely and efficient manner!
Process was easy with fast delivery! Thank you - I will be ordering from you again!
Fast delivery and highly recommended products!
Quality items at great prices! I've been using Marv for years!
Easy ordering and fast shipping!!
- Gil scott
Excellent customer service from Marv Golden! Received my package in record time!
I love shopping at Marv's!
Product was exactly as advertised. I would absolutely shop MG again! Thanks Marv!
Very impressed with Marv Golden! Excellent customer service! Thank you again!
Always a good experience with Marv Golden!
Quick delivery! Great quality products! Thank you Marv!
I was very pleased with the response I got from the MG sales staff!
Needed everything a specific date and location. Everything received as ordered! Thanks Marv!
Service, price and delivery outstanding.
Great prices and fast shipping!
Shipping was fast and efficient!
Great customer service staff! Great products and selection!
Great value at Marv Golden!
Honest and reliable customer service! Will recommend to anyone! I'm so glad I found MG!
Great service and quality products! Thank you Marv!!
Marv Golden is one of the best pilot stores! Quick response and deliveries.
Prompt and efficient shipping! Great prices!
Always great service and a great location for pilots coming in to San Diego!
The service at MG is excellent!
I've been doing business with MG for over 20 years! No one can beat the prices or service!
- Steve vb
Great service with no fuss and fast shipping!
I've been buying headsets from MG for 25 years! Still great customer service.
As always, I receive the best service from Marv Golden.
Great products at great prices!
Shipping was fast and efficient! Delightful customer service staff!
I enjoy shopping at Marv Golden!
- Crj flyr
Marv Golden is highly recommended!
Ordering from MG was hassle-free! Fast international shippping!
Always a pleasure to buy from Marv Golden!
Excellent service from Marv's! Fast shipping and excellent customer service!
Great service from MG. Item was shipped same-day!
The MG representative was knowledgeable and helpful! Pricing was competitive!
Outstanding customer service! Great communication with the customer!
Great customer service!
Would buy again from Marv Golden!!
Knowledgeable and helpful staff! It was a pleasure to work them!
Great service from the MG team!
- Global 5000/6000 captain
MG had fantastic service! Top notch work!
Marv Golden is a great place to shop!
MG has made me a lifetime customer!
- Ray s.
MG had the headset I wanted in stock when no one else did, and with Free Shipping!
MG is highly recommended by pilots everywhere!
Excellent as usual! Quick shipping from MG!
- Bellanca driver
Best prices! Very nice customer service staff!
The products and service from MG exceeded my expectations! Excellent and friendly service!
Great experience at MG! Fast shipping!
Very happy with my experience at MG! Always great to deal with Marv and his staff!
Great service! Fast delivery!
Excellent service with great products and fast delivery!
- Tinmen 146
Easy. No haggling. No shipping cost saves money.
The products work great and Marv's offers fast shipping!
The service at MG was outstanding as always!
- Flight test kiwi
Marv Golden service is always excellent and worry-free!
Five stars for Marv's!
First class experience! Products were delivered on time and as expected!
Best price I could find online! Shipping was extremely fast!
MG goes above and beyond!
Very simple ordering with fast checkout! Thank you!!
Excellent service! Easy to navigate website with prompt delivery!
- Fast ed
Order was filled quickly and professionally - exactly as ordered!
I bought two headsets from Marv 33 years ago and they served me very well. Still in use today!
I was very impressed with Marv Golden! I will definitely be back again!
Great customer service as promised!
First time customer - experience was great!
Offered more selection than any other competitor!
Great quality products and great customer service staff!
- John l
A++! Fast shipping and easy ordering!
Had exactly what I wanted and checkout was a breeze! So many great products!
My shopping experience was excellent! Customer service was very helpful!
- H lang
Great pricing and fast service! I've bookmarked MG for all my pilot needs!
Fast shipping, good price, quality products.
Very professional customer service! The product was delivered quickly.