Ortofon ST-70 Transformer
SKU: 97250586606

Ortofon ST-70 Transformer

Sale price$1147.95 Regular price$1275.50
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Description

Ortofon ST-70 TransformerOrtofon ST 70 Transformer The Ortofon ST 70 reserved for the discerning audiophiles and music lovers. The ST 70 combines the fine components along with world class engineering, for unparalleled sound reproduction. Starting with high quality Lundahl transformers, surrounded by a specialized mu metal shielding, listeners can be assured that every detail in a complex array of notes is reproduced with utter purity, with freedom from internal and external

Ortofon ST-70 Transformer

The Ortofon ST-70 reserved for the discerning audiophiles and music lovers. The ST-70 combines the fine components along with world-class engineering, for unparalleled sound reproduction.

Starting with high quality Lundahl™ transformers, surrounded by a specialized mu-metal shielding, listeners can be assured that every detail in a complex array of notes is reproduced with utter purity, with freedom from internal and external sources of interference. These two items combined make the ST-70 transformer one of the quietest, most revealing transformers.

Featuring dual mono design, the ST-70 provides discrete circuitry for each channel, resulting in the elimination of crosstalk and possible distortions.  This results in cleaner, clearer reproduction with substantially increased stereo imaging.  Regardless of the composition being played, the ST-70 expansive stereo separation provides lifelike realism, and accurate tonal balance devoid of coloration.

ST-70 configurations and technical data

Technical data Configuration A:
Recommended cartridge impedance 5-50 Ω
Gain 24 dB at 1 kHz
Frequency response 10 Hz - 100 kHz ± 1 dB
Recommended load 47 KΩ // 200 pF

Technical data Configuration B:
Recommended cartridge impedance < 10 Ω
Gain 30 dB at 1 kHz
Frequency response 10 Hz - 80 kHz ± 1 dB
Recommended load 47 kΩ / 200 pF

Dimensions and weight
Dimensions: 58 mm(W) x 135 mm(H) x 150 mm(D)
Weight: 1.233 kg

    Terminal connections

    To further minimize signal degradation and maximize signal flow, the ST-70 has been engineered using high quality industrial grade PCB.  Additionally, gold plated RCA jacks with Teflon insulation provide optimal conductivity for use with high quality interconnects. Internally, the unit is assembled with an absolute bare minimum of internal wiring, preserving absolute signal integrity. 

    1. Output terminal for Right channel RCA plug
    2. Input terminal for Right channel RCA plug
    3. Grand earth terminal
    4. Output terminal for Left channel RCA plug
    5. Input terminal for Left channel RCA plug

     

    The ST-70 applications

    The ST-70 maintains compatibility with most Moving Coil cartridges by using internal jumpers to select between two gain/impedance options. This affords audiophiles with broad flexibility while still maintaining a clean aesthetic.
    The ST-70 transformer is a perfect partner for the Cadenza Series.

    Why use a transformer? Since the output of MC cartridges is low, higher gain is required to utilize it, such as that provided by Step-up moving coil transformers or MC phono preamplifiers. Although both devices provide this requirement, both are fundamentally different in function and in sonic character. This is where Step-up moving coil transformers are frequently seen as superior; they are completely passive and offer exceptional noise performance and sound quality.


    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: 97250586606

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    4.6 ★★★★★
    Based on 600 reviews
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    Verified Purchase
    Nicole K
    Whiting, US
    ★★★★★ 4
    Strong and Great for Treats, but Heavier Than Expected
    Style: Gorilla, Size: Small (Pack of 1), Style: Gorilla, Size: Small (Pack of 1)
    This is a very durable and well-made chew toy with good overall quality. The material is thick rubber and holds up well to chewing. It also works very well for holding treats, which stay in place securely. The main drawback is the weight. My dog is about 30 pounds, and even though this is a smaller version, it is still fairly heavy. She tends to use it mainly to get the treats out and then loses interest afterward. What I like: Very durable material Works great for holding treats Good bounce and quality construction Cute design Things to be aware of: Heavier than expected Some treats may be difficult to insert Dogs may lose interest once treats are gone Overall: This is a solid treat-based toy that is built well, but the weight may limit how much some dogs interact with it beyond treat use.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on May 23, 2026
    J
    Verified Purchase
    JS
    Pawtucket, US
    ★★★★★ 5
    Extremely tough!
    Style: Gorilla, Size: Large (Pack of 1)
    These are seriously so much better (and cheaper) than any other supposedly "strong/durable" type toy like this. We have 70lb very strong chewers and they chew through everything. Can not have stuffies. They do eventually chew through but it seriously takes awhile. Especially in comparison to other brands. I will say it says "recommended for dogs under 35lbs" but I also work for houses where I recommended these for their dogs which were smaller and they wouldn't chew on because too tough. But they also accidentally bought the large which is what I buy my big dogs. So the large is GREAT for big dogs. If you have a dog under 35lbs I'd get the size small. Also .... says you can stuff treats. You really can't. Which my dogs don't need. They just love to chew on. I call it their bubble gum because when they FINALLY get a chunk off(which again takes awhile.... as in over a week) they will fling the pieces into the air and chew on like a piece of bubble gum lol... they love it! I don't notice a difference in breath or anything but I don't use the toothpaste either. I just bought to see if tough and they are!! And again price is clearly so much better. I hate spending $20+ on a toy they destroy in a day.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on December 30, 2023
    A
    Verified Purchase
    Alanna
    Whiting, US
    ★★★★★ 3
    Beware if your dog likes to chew
    Style: Gorilla, Size: Large (Pack of 1)
    It’s super cute and my dog loved it, but it didn’t last very long. My dog started peeling off pieces of it and eating it within three hours of play. If you have a dog that takes it easy on the toys I would recommend this one. Otherwise I recommend passing because there’s no way it’s safe for them to be swallowing these pieces.
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on March 26, 2026
    J
    Verified Purchase
    Josh K.
    Lowell, US
    ★★★★★ 5
    Lasted pretty long for my aggressive chewer
    Style: Gorilla, Size: Large (Pack of 1)
    Right away I was excited with this product because of the smell, texture and thickness. Smells minty fresh which does help with breath smell. The texture is great, had smooth areas and rigid areas all while being soft and durable. The product is pretty thick, which I needed for my Pit-Bull. She doesn’t chew much but, when she decides to she is 110% in and dedicated to destroying that item. She chews through most things in less than a day. This product however lasted years before I started to notice damage. It is one of her favorite toys. She liked it so much I bought two, one for the house and one for the car for road trips. It’s the perfect toy to keep a chewer distracted inside a car, along side a deer antler, which also helps with dental hygiene. She gets dental hygiene compliments every trip to the Vet. We use multiple different things to help with her teeth and breathe but, I think this toy contributes the most to her healthy teeth. I call it a toy because she plays with it all the time. Definitely will keep buying long as they keep making it. This product is a must for all dogs, it’s almost perfect for my Pit-Bull
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on February 24, 2021
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    Verified Purchase
    TGue
    Lake Worth, US
    ★★★★★ 5
    Currently surviving a SUPER CHEWER!
    Style: Gorilla, Size: Small (Pack of 1), Style: Gorilla, Size: Small (Pack of 1)
    Welcomed a pomeranian/terrier mix to the family recently. Although he is small he is very capable of tearing things apart! He has destroyed many, many types and brands of toys. When he grew tired of destroying those he turned to objects in my house, walls, furniture, railing etc! I've tried different brands and textures and this is one of only 2 brands he hasn't outright destroyed! He's had this toy for almost a month now and it has come out of this time almost completely unscathed! You'll notice there's a little damage to one of the hands and top of the head but hes managed to destroy toys in an hour or less, so I consider this a big win and will absolutely replace with the same product when the time comes! There's a hole, I think for treats. I haven't used that. It also has a smell, almost like baby powder. In any event, absolutely worth the price which I found to be great to begin with. My dog loves it, and me and my house are soo glad he's chewing on this! If you have a super chewer (I'd never heard of that) I strongly suggest this toy. They also have larger ones for bigger breeds!
    WAS THIS REVIEW HELPFUL?YesReportShare
    Reviewed in the United States on September 6, 2025

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